Effectiveness of supplied mediators in relation to presentation modality and retrieval cue.


Drive level effects on the conditioning of frustration.


Construct validity of recall and recognition postconditioning measures of awareness.


Effects of signal frequency on increase in reaction time in a 10-minute auditory monitoring task.


Maze learning of mature-young and aged rats as a function of distribution of practice.


Presentation modality, distractor modality, and proactive interference in short-term memory.


Effects of irrelevant information in speeded discrimination.


Stroop interference with successive presentations of separate incongruent words and colors.


Situational generality of conditioning phenomena: stimulus generalization and component interaction.


Light-evoked and spontaneous discrete waves in the ventral nerve photoreceptor of Limulus. Discrete waves, recorded from the ventral nerve photoreceptor, occur in the light and in the dark. Spontaneous waves, on the average, are smaller than light-evoked waves. This suggests that not all spontaneous waves can arise from spontaneous changes in the visual pigment molecule identical to changes induced by photon absorption. Spontaneous and light-evoked waves are statistically independent of each other. This is shown by determination of frequency of response as a function of pulse energy for short pulses and determination of the distribution of intervals between waves evoked by steady lights. The available data can be explained by two models. In the first each photon produces a time-dependent excitation that goes to zero the instant the wave occurs so that the number of effective absorptions from a short light pulse equals the number of waves produced by the light pulse. In the second the excitation produced by photon absorption is unaffected by the occurrence of the waves so that the number of waves produced from a short light pulse may be different from the number of effective absorptions. Present results do not allow a choice between the two models.


Electrophysiological control of reversed ciliary beating in Paramecium. Quantitative relations between ciliary reversal and membrane responses were examined in electrically stimulated paramecia. Specimens bathed in 1 mM CaCl(2), 1 mM KCl, and 1 mM Tris-HCl, pH 7.2, were filmed at 250 frames per second while depolarizing current pulses were injected. At current intensities producing only electrotonic shifts the cilia failed to respond. Stimuli which elicited a regenerative response were followed by a period of reversed ciliary beating. With increasing stimulus intensities the latency of ciliary reversal dropped from 30 to 4 ms or less, and the duration of reversal increased from 50 ms to 2.4 s or more; the corresponding regenerative responses increased in amplitude and rate of rise. With progressively larger intracellular positive pulses, electric stimulation became less effective, producing responses with a progressive increase in latency and decrease in duration of reversed beating of the cilia. When 100-ms pulses shifted the membrane potential to +70 mV or more, ciliary reversal was suppressed until the end of the pulse. "Off" responses then occurred with a latency of 2-4 ms independent of further increases in positive potential displacement. These results suggest that ciliary reversal is coupled to membrane depolarization by the influx of ions which produces the regenerative depolarization of the surface membrane. According to this view suppression of the ciliary response during stimulation occurs when the membrane potential approaches the equilibrium potential of the coupling ion, thereby retarding its influx. Previous data together with the present findings suggest that this ion is Ca(2+).


An analysis of hamster afferent taste nerve response functions. Sensitivities to moderately intense stimuli representing four taste qualities to man were determined for 79 hamster chorda tympani fibers. Some fibers were very sensitive to sucrose, sodium chloride, or hydrochloric acid, but none were very sensitive to quinine. These sensitivities were not randomly distributed among fibers: the sucrose sensitivity was separated from and negatively correlated with the other sensitivities which were associated and positively correlated with each other. Moreover, there were a limited number of sensitivity patterns: (a) fibers responding best to sucrose responded second-best to salt, less to acid, not to quinine; (b) fibers responding best to salt either responded second-best to sucrose and not to acid or quinine; or second-best to acid, less to quinine, and not to sucrose; and (c) fibers responding best to acid responded second-best to salt, more to quinine, and less to sucrose than other fibers. Therefore, if four stimuli of different taste qualities are ordered from acceptable to unacceptable, neural response functions of most hamster chorda tympani taste fibers peak at one point. Sensitivities to nine other moderately intense stimuli which vary in quality to man were also determined for 46-49 of the fibers. Sensitivities to sweet stimuli were always associated with each other and separated from sensitivities to nonsweet stimuli. Sensitivities to nonsweet stimuli were all associated with each other; however, the strongest correlations were between sensitivities to stimuli of like quality, e.g., the three acids or the two sodium salts.


Hair cell generator potentials.

Hair cell generator potentials. A technique is introduced using a piezoelectric device to stimulate hair cells of a molluscan statocyst while recording their responses intracellularly. Statocyst displacements produced with the technique are calibrated with stroboscopic photography. Properties of the hair cells' response to currents and mechanical stimulation are studied. The hair cell generator potential arises from a conductance increase and, for a certain range, is a logarithmic function of the amplitude of the displacement stimulus.


Role of surface electric charge in red blood cell interactions. The role of the surface charge of human red blood cells (RBC's) in affecting RBC aggregation by macromolecules was studied by comparing the behavior of normal RBC's with that of RBC's treated with neuraminidase, which removes the sialic acids from the cell membrane and reduces the zeta potential. RBC aggregation in dextrans with different molecular weights (Dx 20, Dx 40, and Dx 80) was quantified by microscopic observation, measurement of erythrocyte sedimentation rate, and determination of low-shear viscosity. Dx 20 did not cause aggregation of normal RBC's, but caused considerable aggregation of neuraminidase-treated RBC's. Neuraminidase-treated RBC's also showed stronger aggregation than normal RBC's in Dx 40 and 80. Together with the electron microscopic findings that the intercellular distance in the RBC rouleaux varies with the molecular size of dextrans used, the present study indicates that the surface charge of RBC's inhibits their aggregation by dextrans and that the electrostatic repulsive force between cell surfaces may operate over a distance of 20 nm.


Development of a prescriptive morality: an historical observation.


Influence of the ionic composition of fluid medium on red cell aggregation. The effects of ionic strength and cationic valency of the fluid medium on the surface potential and dextran-induced aggregation of red blood cells (RBC's) were investigated. The zeta potential was calculated from cell mobility in a microelectrophoresis apparatus; the degree of aggregation of normal and neuraminidase-treated RBC's in dextrans (Dx 40 and Dx 80) was quantified by microscopic observation, measurement of erythrocyte sedimentation rate, and determination of low-shear viscosity. A decrease in ionic strength caused a reduction in aggregation of normal RBC's in dextrans, but had no effect on the aggregation of neuraminidase-treated RBC's. These findings reflect an increase in electrostatic repulsive force between normal RBC's by the reduction in ionic strength due to (a) a decrease in the screening of surface charge by counter-ions and (b) an increase in the thickness of the electric double layer. Divalent cations (Ca(++), Mg(++), and Ba(++)) increased aggregation of normal RBC's in dextrans, but had no effect on the aggregation of neuraminidase-treated RBC's. These effects of the divalent cations are attributable to a decrease in surface potential of normal RBC's and a shrinkage of the electric double layer. It is concluded that the surface charge of RBC's plays a significant role in cell-to-cell interactions.


The absence of interference effects in preschool children's picture recognition.


Competence reconsidered: the concept of secondary process development as an explanation of "competence" phenomena.


A new interpretation of Jungian analytic theory: mysticism versus psychic reality.


Relationship and prediction of infant tests.


Moral develpment and parent behavior antecedents in adolescent psychopaths.


Intelligence as necessary but not sufficient for creativity.


The relationship between type of sanction, story content, and children's judgments which are independent of sanction.


Parental assimilation by children with and without behavioral problems.


Anxiety reduction as a function of verbal satiation and paired-associate learning.


Mechanism of inhibitory action by salts in the feeding behaviour of the blowfly, Phormia regina.


Incorporation of orally administered radioactive precursors into nucleic acids and ribosomes of housefly ovaries.


Educationally speaking.

Educationally speaking.


Termination of pregnancy.

Termination of pregnancy.


Advocate use of exam form by prep athletes.


A small medical staff renews its education program.


Ammonia eye injuries.

Ammonia eye injuries.


The measles picture in Iowa.

The measles picture in Iowa.


A model for erythrocyte sugar transport based on substrate-conditioned "introversion" of binding sites.


Calcium-calcium and calcium-strontium exchange across the membrane of human red cell ghosts.


Spatial resolution in visual system: a theoretical and experimental study on single units in the cat's lateral geniculate body.


Specific regeneration of cutaneous fibers in the cat.


Slow depolarizing potentials and spike generation in pyramidal tract cells.


Coding properties of two classes of afferent nerve fibers: high-frequency electroreceptors in the electric fish, Eigenmannia.


Sex differences in perceptual differentiation and stimulus intensity control.


Investigation into deindividuation using a cross-cultural survey technique.


Field articulation differences in language abilities.


Film-induced arousal, information search, and the attribution process.


Self-control: factors enhancing tolerance of noxious stimulation.


The effects of personality and situational variables on behavioral trust.


Ingroup norms and self-identity as determinants of discriminatory behavior.


Pharmacology of mono- and disubstituted chlorpromazine metabolites.


Muscle relaxant action of  -hydroxylamine cinnamonyl hydroxamic acid in isolated organs.


NMR study on 1,2,4,5-tetrasubstituted 3,3,6,6-tetradeuterated cyclohexanes: conformational contributions and 1,3-diaxial and vicinal deshielding effects of amino and alkylated amino groups and their protonated forms.


Excretion of trans-  9 -tetrahydrocannabinol and its metabolites in intact and bile duct-cannulated rats.


Adsorption of nonionic surfactants on sulfathiazole and naphthalene and flocculation-deflocculation behavior of these suspensions.


Interfacial adsorption of a psychotomimetic drug using liquid scintillation.


Quantitative determination of pentazocine in plasma and of pentazocine and metabolites in urine.


Action of ultrasonicated epinephrine: potentiation of isometric contraction in isolated papillary muscle from dog quiescent heart.


Mass spectra of nine medicinal carbamates.


Toxicological and pharmacological actions of methacrylate monomers. I. Effects on isolated, perfused rabbit heart.


Fenfluramine blockade of CNS stimulant effects of amphetamines.


Dehydration of crystalline theophylline monohydrate and ampicillin trihydrate.


Dissolution profile of log-normal powders: exact expression.


Chronic isoproterenol treatment of mice: effects on catecholamines and rectal temperature.


Quantitative determinations of phenylephrine and phenylpropanolamine hydrochlorides in combination.


Quantitative GLC determination of resorcinol monoacetate in dermatological products.


GLC analysis of homatropine methylbromide in tablets and elixirs.


Analysis of trisulfapyrimidines by high-pressure liquid chromatography.


Evaluation of inhalation aerosols using a simulated lung apparatus.


Semiautomated determination of mandelic acid as benzaldehyde in content uniformity testing of methenamine mandelate tablets.


Variables involved in an automated tablet-coating system.


Synthesis of N-pentafluorobenzoyl-S-(-)-prolyl 1-imidazolide, a new electron-capture sensitive reagent for determination of enantiomeric composition.


Degradation of bronchodilator agents in oxymix system.


Fluorometric measurement of 5-fluorocytosine in biological fluids.


Open-chain analogs of muscarine derivatives.


Biological and phytochemical evaluation of plants. XII. Isolation of acetylakuammidine from Aspidosperma quebracho-blanco leaves.


Colorimetric method for determination of guanazole in blood and urine.


Reaction of methyl 2-(2',2'-bis(carbethoxy)vinylamino)benzoate with hydrazine.


GLC determination of methaqualone in plasma.


Effect of radiation on activity of antibiotics.


Ascorbic acid: preferential lysis and catalase induction in antibiotic-resistant strains of Staphylococcus aureus.


Determination of hydroxy compounds by 4-dimethylaminopyridine-catalyzed acetylation.


Anticonvulsant activity of substituted benzoylpyridines.


Comparison of theoretical equations for potential energy of electrostatic repulsion of colloidal particles at constant surface charge.


Interaction of mechlorethamine and isophosphamide with bovine serum albumin and rat liver microsomes.


Biosynthesis of deuterated benzylpenicillins. 3. Relative antibiotic potency of highly deuterated benzylpenicillin.


Carbocyclic analog of purine ribonucleosides with antileukemic activity.


Reliable and simple method of intravenous injection into the laboratory rat.


Identification of a major impurity in methamphetamine.


Cytotoxicity versus antitumor effect.

Cytotoxicity versus antitumor effect.


Heteromodal cueing and auditory-visual interaction: a literature review.


Detection and the timing of a heteromodal cue: auditory-visual interaction.


Factor similarity of personality across private and military samples: an analysis of the Personality-Attitude Schedule.


Personal adjustment of hospital staff and their attitudes about mental illness.


Speed of motor conflict resolution as related to type of conflict and manifest anxiety.


Alienation and identity-role diffusion in late adolescence.


Conservative attitudes and authoritarian values.


Group desensitization of test anxiety in elementary school.


Training of number conservation in retardates.


Language meaning (gender shaping) among blind and sighted students.


Selection of NaCl solutions by sodium-deprived Mongolian gerbils in Richter-type drinking tests.


Self-perception differences among kibbutz and city adults in Israel and Jewish and non-Jewish adults in the United States.


Lysergic acid diethylamide (LSD 25). XXXX. Effect of pH on transport of methysergide and LSD 25 across gill membrane.


The effect of experimenter absence and response delay on nonreinforced imitation.


An exploratory study of individual differences in perceptual centering and decentering.


Creative thinking ability, school readiness, and intelligence in first grade children.


A critique of Sarnoff and Zimbardo's psychoanalytic alternative to a social comparison theory of emotions.


Fertility ratio: its relationship to mental ability, school achievement, and race.


Name style and conservatism.

Name style and conservatism.


Polarity and "accuracy" of ratings and the meaningfulness of personality dimensions.


Pronunciability in verbal learning of the deaf.


Self-image disparity and attachment to ethnic subculture.


Endotoxin sensitivity of adrenalectomized rats treated with lead acetate.


The erythropoietic effect of a reticuloendothelial blocking agent.


Blocking of a cellular immune reaction to malignant melanoma by immunoglobulin from tumor-bearing animals.


Alkylating anticancer agents and phagocytosis. 3. Stabilizing effect of 1,2-substituted 5-bis-(beta-chloroethyl)-amino-benzimidazole derivatives on erythrocytes in vivo.


The intracellular association of antigen and newly synthesized RNA in in vitro cultured macrophages: an autoradiographic, cytochemical, and ultrastructural study.


Saponin-induced early suppression of marrow reticuloendothelial function assessed with  113m In-chondroitin sulfate colloid.


What does the AMA do for you?

What does the AMA do for you?


Aneurysm of superior mesenteric artery.

Aneurysm of superior mesenteric artery.


Untoward effects--vagotomy or drainage procedures?


Selective tympanocentesis in children.

Selective tympanocentesis in children.


Uterine leiomyosarcoma at Ellis Fischel State Cancer Hospital.


Some endocrinological studies on a child with obesity and diabetes insipidus.


Mercury in lake sediments: a possible indicator of technological growth.


Tetrahydroisoquinoline alkaloids: in vivo metabolites of L-dopa in man.


Tritium contamination of deuterium compounds.


Molecular model for phase transition in biological membranes.


Retardation of foetal growth and plasma protein development in foetuses from mice injected with Coxsackie B3 virus.


Defects of non-verbal auditory perception in children with developmental aphasia.


Another view of neutral alleles in natural populations.


Receptive fields of the visual system of the squid.


Anodic oxidation of urea and an electrochemical approach to de-ureation.


Antibody to Babesia in Scottish red deer (Cervus elaphus).


Menarchal age in Norway: halt in the trend towards earlier maturation.


Mental disorder and season of birth.

Mental disorder and season of birth.


Renal osteodystrophy and its treatment.

Renal osteodystrophy and its treatment.


A new atraumatic technique of recording systolic time intervals at rest and during exercise.


Systolic time intervals at rest and during exercise--a measure of cardiac function?


Monoterpene composition of a chemotype of Mentha piperita having high limonene.


A hypotensive agent in Santalum ellipticum.


Chemical studies of a fixed oil, terpenoids and other compounds from the pods of Heterophragma adenophyllum.


Stigmasterol glucoside a constituent of Adenanthera pavonina seed and leaf.


Phenolic components from the leaves of Kalanchoe pinnata.


Contraceptive plant drugs.

Contraceptive plant drugs.


Separation and characterization of a new alkaloid from the fruit of Duranta repens.


Quantitative determination of digitoxin, gitaloxin, gitoxin, verodoxin and strospesid in the leaves of Digitalis purpurea by means of fluorescence.


Separation of ammajin and marmesin from the fruits of Ammi majus and their chemical estimation.


Reciprocal cross differences in Digitalis lanata x D. lutea.


The mitragyna species of Asia. 23. The alkaloids of the leaves of Mitragyna tubulosa (Havil).


The evaluation of Digitalis purpurea by direct densitometry from paper chromatograms.


Phytochemical investigation of Erigeron crispus.


Alkaloids of Solanum Ecuadorense.

Alkaloids of Solanum Ecuadorense.


Chemical constituents of the flowers of Cassia occidentalis.


Sets and subsets in the identification of multidimensional stimuli.


Multidimensional analysis of twenty-one odors.


Similarity ratings and dimension analyses of auditory rhythm patterns. I.


An aggression machine. 3. The stability of aggressive and nonaggressive patterns of behaviour.


Self-reported arousal during sleep deprivation and its relation to performance and physiological variables.


Some aspects of the Pulfrich effect.

Some aspects of the Pulfrich effect.


I. Q.: social goals and the genetic heresy.


Salmonella isolations in pigs.

Salmonella isolations in pigs.


Angiostrongylus vasorum (Baillet, 1866) infestation in a greyhound kennels.


A case of azoospermia in a previously fertile dog with subsequent recovery.


Pericardectomy as treatment for constrictive pericarditis in a cow.


Heartwater in a Bunaji calf: a case report.


The carriage of animals at high altitude.


Endrin poisoning in poultry: a case history.


The mortality rate in East Coast fever.

The mortality rate in East Coast fever.


Feline picornavirus infection: the in vivo carrier state.


Exploratory laparotomy in a 22-year-old Holstein carriage horse.


Intussusception of the jejunum in a young cat.


Eosinophilic myositis in sheep.

Eosinophilic myositis in sheep.


Swine vesicular disease.

Swine vesicular disease.


CT 1341 and cat anaesthesia.

CT 1341 and cat anaesthesia.


Human territorial behavior: the role of interaction distance in therapeutic interventions.


A proposal for a trial of family therapy and conjugal visits in prison.


After ten years: a follow-up study of comprehensive vocationally oriented psychotherapy.


A comparison of three group approaches to under-achieving children.


Measuring the incidence of self-injury: some methodological and design considerations.


The urban commune: fact or fad, promise or pipedream?


Challenges in mental health for new professionals.


Slogans, slots, and slander: the myth of day care need.


Role of the clinic resident.

Role of the clinic resident.


Family day care: one alternative in the delivery of developmental services in early childhood.


Natural delivery systems: accessible sources of power for mental health.


Our children are our future: early childhood development and the need for services.


Professionalism and the erosion of rationality in the health care field.


The retooling of a child guidance center: changes and changeover for the tasks of the seventies.


From laboratory to real world: service delivery of the Mother-Child Home Program.


Hospital confrontation: a cry for help and technique for change.


Formation of values in the developing person.


Interprofessional collaboration in training in mental health.


The organization of day care: considerations relating to the mental health of child and family.


Effect of operative stress on plasma catecholamine levels during neuroleptanalgesia.


A comparison of pethidine, piritramide and oxycodone in patients with pain following cholecystectomy.


The effect of methoxyflurane anaesthesia and surgery on postoperative renal function in man (Anaesthesist 21, 366, 1972).


THAM v. sodium bicarbonate in idiopathic respiratory distress syndrome.


Forced oscillation technique for determination of resistance to breathing in children.


Familial occurrence of congenital laryngeal clefts.


Flow rate and inorganic components of submandibular saliva in cystic fibrosis.


Adipose cell size and glucose tolerance in obese children and effects of diet.


Gestational age assessment in Nigerian newborn infants.


Sweat tests in the newborn period.

Sweat tests in the newborn period.


Absence of IgA and growth hormone deficiency associated with short arm deletion of chromosome 18.


Cardiac failure due to acute bacterial endocarditis treated with peritoneal dialysis and aortic valve replacement.


Measurement of intrathoracic pressure in the newborn.


Static pulmonary compliance in early childhood.


Controlled clinical trial of corticosteroid therapy in prophylaxis of respiratory distress syndrome.


Histidinaemia: its significance in neonatal screening.


Organic anions and stool volume in the newborn.


Urinary FDP in children with renal disease.


Pulmonary function in the infant of the diabetic mother.


Neonatal hypoglycaemia.

Neonatal hypoglycaemia.


Some perspectives concerning federal health legislation.


Impedance testing for venous thrombosis.


Experimental fracture healing.

Experimental fracture healing.


Lymphography.

Lymphography.


Certification of need laws.

Certification of need laws.


Rapid City flood. Medical response.

Rapid City flood. Medical response.


Neostigmine-induced hyperperistalsis. Effects on security of colonic anastomoses.


Endarterectomy of the external carotid artery. Its importance in the surgical management of extracranial cerebrovascular occlusive disease.


Pulmonary artery pressure monitoring in acute burn management.


Carotid bruit. Significance in patients undergoing an abdominal aortic operation.


Intraoperative arteriography in carotid thromboendarterectomy.


Diagnostic colonoscopy and colonoscopic polypectomy.


Changes in the surgical treatment of peptic ulcer.


Immediate interossei decompression following crush injury of the hand.


Acute cholecystitis and jaundice.

Acute cholecystitis and jaundice.


Bilateral impedance rheography in deep venous thrombosis. Role of respiratory maneuvers and saphenous occlusion.


Experimental studies on fracture healing. 3. Accelerated fracture healing through soluble heterologous collagen.


Prosthetic replacement of superior vena cava. Anti-platelet-adhesive drug influence.


Renal inactivation of endogenous gastrin in dogs.


Retroperitoneal rupture of duodenum with complicating gas gangrene.


Carotid artery aneurysm associated with nonbacterial suppurative arteritis.


Cardiac tamponade. A fatal complication of central venous catheterization.


Transaortic endarterectomy. Treatment of arteriosclerotic lesions of the renal arteries.


Hippocampal theta activity and the attention component of discrimination learning.


The interhemispheric transfer of avoidance learning: an examination of the stimulus control hypothesis.


Effects of caudate lesions on signaled and nonsignaled Sidman avoidance in the rat.


Electrophysiological correlates of cortical spreading depression.


Effects of posttrial eserine administration on learning in "enriched"- and "impoverished"-reared rats.


Conspecific odors as discriminative stimuli in the rat.


Effects of saline consumption and adrenalectomy on water balance in rats.


Aldactazide-induced sodium appetite in rats.


Uncertainty relations in interaural parameters of acoustical stimulation: an evoked potential study of the auditory cortex in the anesthetized cat.


Size of reinforcement and operant responding in hippocampectomized rats.


Effects of airstream temperature and humidity on airlicking in the rat.


Infantile handling and successive spatial reversal learning in rats.


Dissociation of odor and taste in baitshyness.


9 -THC: effect on acquisition and retention of a one-trial passive avoidance response.


Demonstration of the acyl-enzyme mechanism for the hydrolysis of peptides and anilides by chymotrypsin.


Kinetics of phenylalanine hydroxylase with analogs of tetrahydrobiopterin.


Ultraviolet difference spectroscopic studies of the binding of ligands to rabbit muscle aldolase.


Mechanisms of formation and equilibria of 4a and 5 adducts of an isoalloxazine. Reaction of 10-(2',6'-dimethylphenyl)-3-methylisoalloxazine-6,8-disulfonate with sulfite in aqueous media.


Study of nitrogen-15-labeled amino acids and peptides by nuclear magnetic resonance spectroscopy.


On the sequence similarity of the cohesive ends of coliphage P4, P2, and 186 deoxyribonucleic acid.


Selective modification of tryptophan-149 in ovine pituitary lactogenic hormone.


Affinity labeling of the active sites of delta  5 -ketosteroid isomerase using photoexcited natural ligands.


The reaction of glyoxal with nucleic acid components. V. Denaturation of DNA under the action of glyoxal.


Absence of ultraviolet-stimulated repair replication in the nuclear and chloroplast genomes of Chlamydomonas reinhardti.


Structural comparison of 37-S and 32-S ribosomal precursor RNA in yeast with the mature ribosomal RNA components.


The use of deoxyribonuclease in the isolation of nucleoli and purification of nuclear RNA--a caution.


The rate of incorporation of amino acids into brain proteins during infusion in the rat.


Estrogen-induced phosphoprotein synthesis in roosters. Kinetics of induction.


Control of histone synthesis in HeLa cells.


Correlation of the differences in conformation between 2'-5' and 3'-5' dinucleoside monophosphates with their behaviour on a sephadex LH-20 column.


In vitro protein synthesis in yeast. Polyuridylic acid-dependent incorporation of phenylalanine into endogenous peptidyl transfer RNA.


Enzymes controlling cerebral DNA synthesis: response to 2,4,5-trichlorophenoxyacetic acid and hexachlorophene.


DNA synthesis by isolated mitochondria. V. Electron microscopy of replicative intermediates.


The relative turnover time in vivo of the intracellular transport of five hydrolases in the pancreas of the rat.


Methylmethionine labeling of a higher plant tissue: the incorporation into RNA and pectinic acid on nucleic acid extracts.


The properties of O 6 -methylguanine in templates for RNA polymerase.


Somatotopic organization related to nuclear morphology in the cuneate-gracile complex of opossums Didelphis marsupialis virginiana.


Noradrenergic axon in the cerebral cortex of rat. I. Radioautographic visualization after topical application of DL-( 3 H)norepinephrine.


6,7-Dihydroxytetrahydroisoquinoline: electron microscopic evidence for uptake into the amine-binding vesicles in sympathetic nerves of rat iris and pineal gland.


The organization of tubero-hypophyseal and reticulo-infundibular catecholamine neuron systems in the rat brain.


Fluorescence histochemical and microspectrofluorometric mapping of dopamine and noradrenaline cell groups in the rat diencephalon.


Corticocortical fiber connections of the cat cerebrum. I. The temporal region.


Acetylcholinesterase: histochemical differentiation between motor and sensory nerve fibres.


The effects of acetylcholine and nicotine on unit activity in the hypothalamic thermoregulatory centers of the rat.


Corticortical fiber connections of the cat cerebrum. II. The parietal region.


Evolution, in mouse brain microsomes, of lipids and their constituents during myelination.


Differentiation of chick embryo cerebral hemispheres. II. Incorporation of ( 3 H)uridine into 29 S, 18 S, 5 S and 4 S RNA.


Differentiation of chick embryo cerebral hemispheres. I. Incorporation of tritiated uridine into the acid-soluble nucleotide pool and into total RNA in vitro.


Photically oriented conditioned reflexes elicited by electrical stimulation of the visual system in the cat.


The location of longitudinally running dendrites in the ventral horn of the cat spinal cord.


Anatomical evidence for cortical subdivisions based on vertically discrete thalamic projections from the ventral posterior nucleus to cortical barrels in the rat.


Cortical effect of selective visual experience: degeneration or reorganization?


Tetanus toxin and the synaptic release of GABA.


The distribution of  -aminobutyric acid (GABA) in the human substantia nigra.


Identification and quantitation of a new indolealkylamine in rat hypothalamus.


Light stimulated release of [35 S]Taurine from chicken retina.


Corticocortical fiber connections of the cat cerebrum. 3. The occipital region.


The corticothalamic projections from parietal regions of the cerebral cortex. Experimental degeneration studies in the cat.


Non-primary afferents to the nucleus gracilis from the lumbar cord of the ct.


The fine structural synaptic organization of the cat lateral cuneate nucleus. A study of sequential alterations in degeneration.


Intrinsic connections of caudate neurons. II. Fluorescence and electron microscopy following chronic isolation.


Intrinsic connections of caudate neurons. I. Locally evoked field potentials and extracellular unitary activity.


Presynaptic excitability changes induced in single laryngeal primary afferent fibres.


Changes in firing rates of single preoptic and hypothalamic units following an intravenous administration of estrogen in the castrated female rat.


A method for assessing stages of neural maturation.


Monocular relearning of a dark-light discrimination after large unilateral cortical lesions.


Calcium mediation of the inhibitory effects of biogenic amines on cerebral cortical neurones.


Sialidase activity against endogenous substrate in rat brain.


Sperm structure of Oxyrhyncha.

Sperm structure of Oxyrhyncha.


Decrease in adenyl nucleotide concentrations in rat brain components after footshock stress.


Increase in fertility, with repeated mating, of gamma irradiated male codling moths, Laspeyresia pomonella (L.) (Lepidoptera: Olethreutidae).


The relationship of Physaloptera maxillaris (Nematoda: Physalopteroidea) to skunk (Mephitis mephitis).


The fine structure of the cecal epithelium of Megalodiscus temperatus.


Helminths of Sebastes alutus (Pisces: Teleostei) from the northeastern Pacific.


Alarming increase of the cancer mortality in the U.S. black population (1950-1967).


Quantitative thermography as a predictor of breast cancer.


Breast cancer detection by manual surface temperature detector: comparison with results of thermography and mammography.


Malignant melanoma and the breast.

Malignant melanoma and the breast.


Immunoassayable insulin in carcinoma of the cervix associated with hypoglycemia.


Liver-spleen scan in Hodgkin's disease.

Liver-spleen scan in Hodgkin's disease.


Cervical lymph node metastasis: unknown primary cancer.


Prognostic significance of regional lymph node histology in uterine cervical cancer.


Primary malignant mesothelial tumors in Canada, 1960-1968. A pathologic review by the Mesothelioma Panel of the Canadian Tumor Reference Centre.


Chondrosarcoma arising in a cartilaginous area of previously irradiated fibrous dysplasia.


Use of plasma-free medium for the in vitro culture of human lymphocytes.


Medullary carcinoma of the thyroid gland. A clinicopathologic study of 40 cases.


Single-dose quinacrine (atabrine) and thoracostomy in the control of pleural effusions in patients with neoplastic diseases.


Hodgkin's disease in the first decade.

Hodgkin's disease in the first decade.


A unified classification of cancers: an oncotaxonomy with symbols.


Effect of excision or local radiotherapy to a tumor and its regional nodes on metastases.


Lymphangiomyoma: clinicopathologic study and ultrastructural confirmation of its histogenesis.


Situational effects on retaliatory aggression at three age levels.


Verbalization during the preparatory interval of a reaction-time task and development of motor control.


A reexamination of the effects of intent and consequence on children's moral judgments.


Social class differences in attachment behaviors of ten-month-old infants.


Cooperative and competitive behavior of retarded and nonretarded children at two ages.


A quantitative methodology to examine the development of moral judgment.


Organization of early skilled action.

Organization of early skilled action.


The effects of vertical rocking frequencies on the arousal level in two-month-old infants.


The acquisition of the diagonal concept.


Perseverative errors in search by young infants.


Stress, activity, and proximity seeking: sex differences in the year-old child.


Continuous stimulation reduces arousal level: stability of the effect over time.


Copying in drawing: the importance of adequate visual analysis versus the ability to utilize drawing rules.


Color cues and rehearsal in short-term memory.


The effects of early stimulation on low-birth-weight infants.


U.S. Supreme Court on abortion. Roe v. Wade, 41 U.S.L.W. 4213(1973). In the majority opinion of the U.S. Supreme Court decision on Abortion (Roe v. Wade) in which Justices Blackman, Douglas, Brennan, Stewart, Marshall and Power and Chief Justice Burger joined, the attitudes towards abortion from the Greek and  Roman periods through the present were cited.  It is noted that restrictive abortion laws are of recent vintage.  The nineteenth century criminal abortion laws may have been enacted to protect the mother's health, to discourage illicit sexual conduct, or for the state interest of protecting prenatal life.  The Due Process Clause of the 14th Amendment is violated by an abortion statute which considers all but life-saving abortions to be criminal acts.  In the first trimester, the abortion decision must be left to the medical judgement of the woman's attending physician.  The state may regulate the abortion procedure subsequent to the end of the first trimester in ways that are reasonably related to maternal health.  The state may regulate or proscribe abortion subsequent to the viability of the fetus.  The decision vindicates the right of the physician to administer treatment according to medical judgement up to the points where state interest provide compelling justifications for intervention.


Complications of arterial catheterization.


Prevalence of parasites in Puerto Rican and black children of Hartford, Connecticut.


Fundamentals of radionuclide thyroid evaluation.


Alien travelers.

Alien travelers.


Infant mortality statistics--political fiction.


A shopper's guide to surgery.

A shopper's guide to surgery.


Accommodation, convergence and aging.

Accommodation, convergence and aging.


True and simulated superior oblique tendon sheath syndromes.


Urinary calculi with methazolamide therapy.


Interferometric resolution determinations in the fovea and parafovea.


Serous maculopathy of myopes. Fluorescein retinography and possibilities for treatment.


Cyclic strabismus--a case study.

Cyclic strabismus--a case study.


Optic neuritis in children infectious mononucleosis as an etiology.


Some remarks concerning the non-surgical treatment of simple glaucoma.


Electrodiagnostic procedures in drug-induced ocular diseases.


Empirical model of electro-oculogram.

Empirical model of electro-oculogram.


Visual acuity in the newborn with notes on some objective methods to determine visual acuity.


Abnormal distance--near esotropia.

Abnormal distance--near esotropia.


Value of orthoptics in pre- and post-surgical management of strabismus.


Genetic aspects of strabismus.

Genetic aspects of strabismus.


Acquired bilateral superior oblique palsy.


Surgical treatment of congenital jerk-type nystagmus: its cause and effect on heterotropia.


Colored filters and screens for studying monocular perception in binocular vision.


Spasm of accommodation.

Spasm of accommodation.


Latency of ocular movement in cerebral disease.


Associated convergence and accommodative insufficiency.


Cryotherapy for retinal angiomatosis: a clinico-pathologic report.


Binocularity after retinal detachment surgery.


Consequences of unilateral inferior oblique weakening.


Visuoconstructive disability in patients with cerebral disease: its relationship to side of lesion and aphasic disorder.


Propylenglycol. A new osmotic agent for ophthalmic uses.


The functions and the philosophy of the American Board of Ophthalmology.


Squamous cell carcinoma of the conjunctiva.


Role of mermithid nematodes in biological control of mosquitoes.


Regulation of nematode behavior by physical means.


Experimental predation studies of malacophagous larvae of Sepedon fuscipennis (Diptera: Sciomyzidae) and aquatic snails.


Larval trematode antagonism: principles and possible application as a control method.


Ribeiroia marini: pathogenesis and larval trematode antagonism in the snail, Biomphalaria glabrata.


Biological control: implications of the analogy between the trophic interactions of insect pest-parasitoid and snail-trematode systems.


Severe epistaxis finally controlled by ligation of both internal maxillary arteries.


Common cutaneous disorders of the eyelids.


Histochemical tracing of fluorescein in retina.


The law of medical malpractice.

The law of medical malpractice.


Newly defined lens and frame factors in the reduction of eye injuries.


Granulomatous colitis: significance of involvement of the terminal ileum.


Sensitivity and specificity in tests of distal ileal function: prospective comparison of bile acid and vitamin B 12  absorption in ileal resection patients.


Effect of carbenoxolone on the gastric mucosal barrier in man after administration of taurocholic acid.


Gastric acid suppression by intravenous glucose solutions.


Effect of prostaglandin E 1  on glucose, water, and electrolyte absorption in the human jejunum.


Some physiological characteristics of the esophagogastric junction in the opossum.


Effect of propranolol on pentagastrin-induced HC1 secretion and gastric mucosal blood flow in dogs.


Effect of gastric acidity on gastric ulceration induced by hemorrhage in the rat, utilizing a gastric chamber technique.


Effect of prolonged nursing on the activity of intestinal lactase in rats.


Influence of sodium taurocholate, cholestyramine, and mylanta on the intestinal absorption of glucocorticoids in the rat.


Cell migration and cortisone-evoked decrease of acid  -galactosidase in the ileum of suckling rats.


Interrelationship of bile salts, phospholipids, and cholesterol in bile during manipulation of the enterohepatic circulation in the conscious dog.


Hydralazine disease associated with transient granulomas in the liver. A case report.


Crohn's disease of the colon--homogeneous or diverse entity?


Experimental production of peptic ulcer.


Maturational deceleration after treatment of congenital adrenal hyperplasia.


Newborn screening for cystic fibrosis with the chloride electrode and neutron activation analysis.


On the mode of action of acetylsalicylic acid (aspirin) on collagen.


Pulmonary mechanics and diffusing capacity in cystic fibrosis.


Poetry therapy helps patients express feelings.


Hospital program uses nonmedical volunteers to talk down drug users.


Characteristics of nonprofessionals serving as primary therapists for acute schizophrenics.


A conceptual framework for program evaluation in a mental health center.


Developing behavior modification programs with emphasis on self-control.


An open letter on the care and maintenance of hospital teachers.


The objectives and functions of the Royal College of Pathologists.


A chaplain's view of confrontation therapy.


Symposium: cutaneous pathology as related to systemic disease. Introduction.


Lupus erythematosus. Histopathology of cutaneous lesions.


Extreme exertion rhabdomyolysis: a histopathologic study of 31 cases.


The diagnosis of histopathology.

The diagnosis of histopathology.


High altitude hypoxia and chemodectomas.


The pathologist--the "active conscience of the physician".


Problem of localization in the median plane: effect of pinnae cavity occlusion.


Acuity of the human sound localization response underwater.


Multidimensional coding within the temporal microstructure of auditory displays.


An integrable model for the basilar membrane.


Threshold adaptation in normal listeners.


DBA attenuation of ear protectors.

DBA attenuation of ear protectors.


Perceptual confusions between four-dimensional sounds.


Purification and properties of threonine deaminase from the X-1 isolate of the genus Thermus. Threonine deaminase (l-threonine dehydratase EC 4.2.1.16) has been partially purified from a new extreme thermophilic bacterium, Thermus X-1, which is similar to T. aquaticus YT-1. The threonine deaminase of strain X-1 has a maximal rate of reaction at 85 to 90 C and is more thermostable than the threonine deaminase from mesophilic bacteria. The enzyme has an apparent molecular weight of 100,000 to 115,000, a K(m) for l-threonine of 14 mM, a pH optimum of 8.0, and like other threonine deaminases also catalyzes the deamination of serine. However the Thermus X-1 threonine deaminase does not show a strong feedback inhibition by isoleucine. It is suggested that the regulation of the biosynthesis of isoleucine in this extreme theromophile may resemble that reported in Rodospirillum rubrum.


Comparison of acetohydroxy-acid synthetases from two extreme thermophilic bacteria. The acetohydroxy-acid synthetases from two extreme bacterial thermophiles, Thermus aquaticus and Bacillus sp., have been studied. The two enzymes have different pH optima, 8 and 6, respectively, and both are feedback inhibited by valine. The inhibition is of interest because it is not expressed below 60 C, but only at higher temperatures which are optimal for catalytic activity. Valine inhibition in T. aquaticus was noncompetitive, whereas in Bacillus sp., it was competitive. Isoleucine (10(-3) M) also inhibited the two enzymes, whereas leucine (10(-3) M) did not. There was no concerted feedback when the amino acids were added in together. The sensitivity of the enzymes to valine could not be removed by HgCl(2). Both enzymes required Mg(2+) and thiamine pyrophosphate for optimal activity, whereas only the enzyme from T. aquaticus required flavine adenine dinucleotide in addition. None of these cofactors was essential for the feedback inhibition caused by valine. The enzymes from both bacteria could be repressed, but only in the presence of all three branched-chain amino acids indicating that, as in Escherichia coli and Salmonella typhimurium, the repression system is multivalent.


Evidence for the existence of an aerobic pathway for synthesis of monounsaturated fatty acids by Alcaligenes faecalis. Studies on the composition of total fatty acids of Alcaligenes faecalis harvested at different growth phases have been carried out. Ability of the organism to desaturate palmitic and stearic acid has also been tested. The organism contained palmitic (16:0), stearic (18:0), palmitoleic (16:1), cis-vaccenic (18:1), cyclopropane (17: big dn tri, open and 19: big dn tri, open), and three hydroxy acids. Increase in cyclopropane acids and corresponding decrease in monounsaturated acids in direct proportion to the age of the culture were observed, whereas other fatty acids remained relatively unaltered. A growing culture of the organism was found to desaturate [1-(14)C]palmitic acid supplied in the medium to hexadecanoic acid. Resting cells desaturated [1-(14)C]palmitic and [1-(14)C]stearic acid giving rise to about 50% of (14)C in the COOH group of corresponding monounsaturated fatty acids.


Oxidation of elemental sulfur by Sulfolobus acidocaldarius. Oxidation of elemental sulfur by Sulfolobus acidocaldarius, an autotroph which grows at high temperatures and low pH, was examined by use of (35)S-labeled elemental sulfur. When cultured at pH 3.2 and 70 C, S. acidocaldarius oxidized elemental sulfur essentially quantitatively to sulfuric acid. Oxidation rate paralleled growth rate and decrease in pH of the culture medium. Elemental sulfur was not oxidized under these conditions if the culture was poisoned with formaldehyde. During the growth phase, the proportion of cells attached to the sulfur crystals increased progressively, and in the later phases of growth over 10 times more cells were attached to sulfur than were free. Doubling times for eight strains growing on elemental sulfur varied from 37 to 55 h. The organism grows much more rapidly on yeast extract than on sulfur. In a medium containing both sulfur and yeast extract, sulfur oxidation was partially inhibited, although growth was excellent.


Diurnal variation of the metabolic clearance rate of cortisol. Effect on measurement of cortisol production rate.


Thyroxine: just a prohormone or a hormone too?


Fermentation of glucose, fructose, and xylose by Clostridium thermoaceticum: effect of metals on growth yield, enzymes, and the synthesis of acetate from CO 2 . Clostridium thermoaceticum ferments xylose, fructose, and glucose with acetate as the only product. In fermentations with mixtures of the sugars, xylose is first fermented, then fructose, and last, glucose. Fructose inhibits the fermentation of glucose, and this inhibition appears to be due to a repression of the synthesis of an enzyme needed for glucose utilization. Addition of metals to the culture medium increases the cell yield drastically from about 7 to 18 g per liter, and Y(glucose) values between 40 and 50 are obtained. According to the postulated pathways of the fermentation of glucose and synthesis of acetate from CO(2) by C. thermoaceticum, 3 mol of ATP are available as energy for growth. Thus a Y(adenosine 5'-triphosphate) of 13 to 16 is obtained. Because the normal Y(ATP) value is 10.5, this could mean that an additional source of ATP is available by an unknown mechanism. The addition of metals also increases the nicotinamide adenine dinucleotide phosphate-dependent formate dehydrogenase activity, the overall reaction ((14)CO(2) --> acetate), and the incorporation of the methyl group of 5-methyltetrahydrofolate into acetate. These reactions are catalyzed very efficiently by cells harvested in early growth, whereas cells obtained at the end of a fermentation have very low formate dehydrogenase activity and capacity to incorporate CO(2) into acetate. The following enzymes involved in the synthesis of acetate from CO(2) and in the metabolism of pyruvate are present in extracts of C. thermoaceticum: 10-formyltetrahydrofolate synthetase, 5,10-methenyltetrahydrofolate cyclohydrolase, 5,10-methylenetetrahydrofolate dehydrogenase, 5,10-methylenetetrahydrofolate reductase, phosphate acetyltransferase, and acetate kinase. These enzymes are not or are very little affected by the addition of metals to the growth medium. The amount of corrinoids in cells from early growth is low, whereas it is high in cells harvested late in growth. The opposite is found for the activity of delta-aminolevulinate dehydratase, which is high at the beginning of growth and low at the end.


Genetic analysis of mating type and alkane utilization in Saccharomycopsis lipolytica. The mating reaction in Saccharomycopsis lipolytica is shown to be bipolar through the analysis of whole meiotic tetrads. Genetic evidence is provided that alkane metabolism proceeds through a fatty acid or a fatty acid intermediate since several mutants unable to grow on n-tetradecane were also unable to utilize palmitic acid.


Placental secretion of unconjugated estrone, estradiol and estriol into the maternal and the fetal circulation.


Serum concentrations of estrogen, testosterone, and gonadotropins in osteoporotic and nonosteoporotic postmenopausal women.


The apparent affinity of plasma transcortin (CBA) in inbred Tamilian Hindus belonging either to a diabetes-prone community or to a group without family history of diabetes.


Sleep-related, nychthermeral and briefly episodic variation in human plasma prolactin concentrations.


The purification of human prolactin from frozen pituitary glands.


The effect of intrauterine contraceptive devices on ovarian and menstrual function in the human.


The effect of  131 I therapy on survival of patients with metastatic papillary or follicular thyroid carcinoma.


Comparative study of growth hormone response to hypoglycemia in normal subjects and in patients with primary myxedema or hyperthyroidism before and after treatment.


Serum insulin levels following administration of exogenous insulin.


The effects of posture on the metabolism of androstenedione and estrone in males.


Chlorpromazine treatment and growth hormone secretory responses in acromegaly.


Further studies of gonadotropin and estradiol secretion during the preovulatory phase of the human menstrual cycle.


The splanchnic clearance rate of progesterone in patients with cardiac disease.


Simultaneous measurement of multiple plasma steroids by radioimmunoassay demonstrating episodic secretion.


Gas chromatographic determination of urinary excretion of testosterone, epitestosterone, and androstenedione in pre-adolescent and adolescent children.


Effect of lithium on thyroxine disappearance in man.


The effect of lid suture upon the growth of cells in the dorsal lateral geniculate nucleus of kittens.


The conformation, cytology and synaptology of the opossum inferior olivary nucleus.


Visual intensity and pattern discrimination after lesions of the thalamofugal visual pathway in pigeons.


Enhanced discriminated bar-press avoidance in the rat through appetitive preconditioning.


Autocontrol of sensory reinforcement in children.


Effect of administration of adrenalin on immobility reaction in domestic fowl.


Conditioned inhibition and tonic immobility: stimulus control of an innate fear response in the chicken.


Some behavioral effects of olfactory bulb damage in the rat.


Appetitive and aversive conditioning in thiamine-deficient rats.


Taste as a dipsogenic stimulus.

Taste as a dipsogenic stimulus.


Effect of intracranial acetylcholine injection on thermoregulatory responses in the rat.


Behavior-genetic analysis of mouse emotionality. I. Factor analysis.


Interference with priming for audiogenic seizures in BALB-c mice by prior auditory stimulation.


Effects of simultaneous and successive septal and amygdaloid lesions on social behavior of the rat.


Nature of visual recovery following posterior neodecortication in the hooded rat.


Effects of distraction on performance of obese and normal subjects.


Visual cortical lesions in the rat and a conditioned emotional response.


Maze learning and orientation in the fire ant (Solenopsis saevissima).


Effects of ventromedial hypothalamic lesions on hunger-motivated behavior in rats.


Aversion to a palatable saline solution in rats: interactions of physiology and experience.


Effects of food deprivation on free-operant avoidance behavior. Lever pressing was maintained by Sidman's shock-postponement procedure and Herrnstein and Hineline's shock-frequency-reduction procedure with rats. Food deprivation to 80% and 70% of the animals' body weights on free feeding resulted in decreased response rates in both avoidance paradigms tested. Reinstatement of free-feeding conditions increased body weights and response rates and decreased shock rates. The effects of food deprivation were not dependent upon any particular avoidance parameters, or types, intensities, or durations of electric shock. These results mean that weight control is essential in long-term studies of avoidance behavior, and in studies of the effects on avoidance behavior of physiological interventions, such as hypothalamic lesions, that themselves may produce weight changes.


Drugs and punished responding. I. Rate-dependent effects under multiple schedules. The effects of drugs were studied in pigeons whose responses were punished with electric shock during one component of a multiple fixed-interval 5-min fixed-interval 5-min schedule of food presentation. Most of the drugs analyzed for rate-dependent effects increased low rates of both punished and unpunished responding, while increasing higher rates less, or decreasing them; however, low rates of punished responding sometimes were increased more by pentobarbital, diazepam, and chlordiazepoxide than were matched rates of unpunished responding. In contrast, d-amphetamine and chlorpromazine usually increased low rates of unpunished responding more than matched rates of punished responding. These two drugs also decreased high rates of unpunished responding less than they decreased high rates of punished responding. Thus, the effects of drugs on punished responding depend on the control rate of punished responding; however, the rate-dependent effects of drugs on punished responding are not always the same as they are for unpunished responding.


Analysis of the control exerted by a complex cooperation procedure. The study examined the effects of the availability of a non-cooperative response on cooperative responding when cooperation did not have to result in an equal distribution of work or reinforcers. Also, an attempt was made to determine if the cooperative responding was under the control of the cooperation procedure. Pairs of institutionalized retardates were tested in full view of each other. For each subject, reinforcers (money) were contingent upon responses on each of two panels: (1) a matching panel for working matching-to-sample problems, and (2) a sample panel for producing the sample stimulus. The matching panels of the two subjects were 6 m apart, but a subject's sample panel could be placed at different distances from his matching panel. For each subject, either his own or his partner's sample panel could be nearest his matching panel such that less walking was required to reach one sample panel than the other. Subjects could work either individually, by producing their own sample stimulus, or cooperatively, by producing the sample stimulus for their partner. Subjects selected whichever solution involved the least amount of walking. The importance of testing for control by the cooperation procedure was indicated by the findings that cooperative-like responses were not always under the control of the cooperation procedure.


Effects of punishing elements of a simple instrumental-consummatory response chain. Rats were trained to press a lever, with every response reinforced with water. After responding was established, nine rats were administered a brief shock after each lever press, and nine others were shocked after drinking. The two procedures resulted in similar suppression of responding, and examination of the latency data when responding was partially suppressed indicated that under both conditions response suppression was due primarily to an increase in the latency of the instrumental response, rather than to pausing between the instrumental and consummatory responses. Thus, punishment following either the instrumental or consummatory component of the simple response sequence reduced the number of sequences initiated, rather than selectively suppressing the punished behavior.


Pup retrieving as a reinforcer in nulliparous mice. Six nulliparous female mice were trained to bar press with bar pressing reinforced by the opportunity to retrieve pups to the nest. Then, responses on one bar produced the opportunity to retrieve pups, while responses on a second bar produced sensory contact with non-retrievable pups, presented behind a screen door. All subjects emitted more responses on the bar yielding retrievable pups. When the bar-pup contingency was reversed, five subjects learned to press the opposite bar for retrievable pups. The sixth subject showed extinction of responding on the bar that had previously yielded retrievable pups, but failed to press the other bar. A major portion of the reinforcing value of pup presentation resulted from the opportunity to perform the behavior of pup retrieving. This finding supports theoretical formulations which state that the performance of species-typical consummatory behaviors should have reinforcing properties.


Shared attention in pigeons.

Shared attention in pigeons. Two pigeons performed a three-key matching-to-sample task. The comparison (side key) stimuli were either solid colors or white lines. The sample (center key) stimuli were either compounds (white lines on colored grounds) or elements (white lines on black grounds on some trials, and solid colors on other trials). Sample stimuli were presented for nine sample stimulus durations ranging between 0.04 and 5.00 sec. Within each daily session, both compound and element samples were presented at each sample duration in a random sequence. Compound samples controlled matching responses less effectively than did element samples at all sample stimulus durations.


Effects of stimulus control and deprivation upon discriminative responding. Discriminative responding in pigeons was studied under multiple variable-interval extinction schedules in which extinction was correlated with either a tone or a white keylight. The two procedures resulted in weak and strong stimulus control, respectively. In the first experiment, there was no interaction between schedule components when stimulus control was strong and reinforcement was omitted under the previously reinforced component. However, there was marked induction between components when stimulus control was weak and responding was extinguished under the previously reinforced component. In the second experiment, hours of food deprivation was varied under two levels of stimulus control. Deprivation mainly influenced response rates under the extinction stimulus, with greater absolute rate increases occurring the lower the existing level of stimulus control. Increases in responding during the extinction stimulus were four times as great from 24 to 72 hours of deprivation as from 24 to 48 hours under conditions of both high and low stimulus control.


Effects of static and motion parallax depth information on perception of size in children and adults.


The child's memory for actional, locational, and serial scenes.


The use of visual and verbal memory processes by three-year-old children.


Ultrastructure of the replication of the grasshopper crystalline-array virus in Schistocerca americana compared with other picornaviruses.


The use of high specific activity tritiated thymidine and autoradiography for studying molluscan cells.


Physiological responses to temperature stress by an Australian murid, Rattus lutreolus.


Partial characterization of a natural agglutinin in the hemolymph of the lobster, Homarus americanus.


Care and management of the long-tongued bat, Glossophaga soricina (Chiroptera: Phyllostomatidae), in the laboratory, with observations on estivation induced by food deprivation.


Body composition, energy content, and lipid cycles of four species of rodents.


Body water content and turnover in several species of rodents as evaluated by the tritiated water method.


The reproductive cycles of three species of opossums and other mammals in the Panama Canal Zone.


Effect of litter size on postnatal growth and survival in the desert woodrat.


Age determination and occurrence of incremental growth lines in the dental cementum of the common vampire bat (Desmodus rotundus).


Hibernation in the spotted ground squirrel, Spermophilus spilosoma annectens.


Seasonal data on reproduction and body weights of pias (Ochotona princeps).


Climatic conditions and breeding in Richardson's ground squirrel.


Growth curves for bushy-tailed woodrats based upon animals raised in the wild.


Duration of post-implantation in a western subspecies of the spotted skunk (Spilogale putorius).


Importance of green vegetation for reproduction in the kangaroo rat, Dipodomys merriami merriami.


Patterns of reproduction in a laboratory colony of Peromyscus.


Reproduction in the red squirrel (Tamiasciurus hudsonicus) in Colorado.


Observations on the breeding behavior of the harbor seal in the state of Washington.


Characteristics of inflation and deflation reflexes during expiration of the cat.


The effects of reducing and alkylating agents on the acetylcholine receptor activity of frog sartorius muscle.


Entering the E.E.C.

Entering the E.E.C.


Diabetes--a disease for general practice.


Measuring the quality of general practice.


Short-stay surgery and general practice.


The second wave.

The second wave.


What we're all about.

What we're all about.


Art. The universal evocation.

Art. The universal evocation.


A new manpower boom.

A new manpower boom.


The need is now.

The need is now.


Ties that bind.

Ties that bind.


The mucosal lesion of the proximal small intestine in acute infectious nonbacterial gastroenteritis.


Quality-of-care assessment: choosing a method for peer review.


Coronary-artery spasm.

Coronary-artery spasm.


Catecholamines and hypertension.

Catecholamines and hypertension.


Effects of digoxin.

Effects of digoxin.


Efficacy of rubella immunization.

Efficacy of rubella immunization.


Details of poliomyelitis outbreak.

Details of poliomyelitis outbreak.


Lymphocyte-depletion Hodgkin's disease.

Lymphocyte-depletion Hodgkin's disease.


Homovanillic acid in cerebrospinal fluid of alcoholics.


The Swedish system of medical care.

The Swedish system of medical care.


Tight-girdle syndrome.

Tight-girdle syndrome.


Double helix at atomic resolution.

Double helix at atomic resolution.


Oncogenic transformation of hamster embryo cells in vitro by adenovirus type 5.


Mutual antagonism between botulinum toxin and  -bungarotoxin.


Adult parthenogenetic chickens.

Adult parthenogenetic chickens.


Elimination kinetics of  -amino-isobutyric acid in non-pregnant and pregnant rabbits.


Competition between nerves for functional connexions with axolotl muscles.


Foetal antigens and cancer.

Foetal antigens and cancer.


Chemistry of the conversion of nitrate nitrogen to smoke products.


Inhibition by insulin of cardiac cathepsin D activity.


Comment on "visual system's view of acoustic space".


Ufasomes are stable particles surrounded by unsaturated fatty acid membranes.


Salicylates and phospholipid bilayer membranes.


Synaptonemal complexes in brown algae.

Synaptonemal complexes in brown algae.


Supercontracting striated muscle in a vertebrate.


State-dependent effects of marihuana on human memory.


Visibility of vehicle rear lights in fog.


LIVES of Lincolnshire.

LIVES of Lincolnshire.


Syringomyelia and its surgical treatment.


The preservators.

The preservators.


1. The management of intravenous infusions.


Disorders of the sinuses.

Disorders of the sinuses.


On teaching ethics to nurses.

On teaching ethics to nurses.


Briggs: the context. 3. Nursing work: some impressions.


Science's role in the World Health Organization.


Genetic polymorphism of proline-rich human salivary proteins. In randomly collected saliva samples from 120 Caucasians, 79 Blacks, and 40 Chinese, three phenotypes were observed by electrophoresis in alkaline slab polyacrylamide gels. The proteins showing polymorphism were identical with four previously characterized proline-rich proteins. Inheritance is controlled by two autosomal codominant alleles. The gene frequencies were for Caucasians, Pr(l)=0.73, Pr(2)=0.27; for Blacks, Pr(1)=0.80, Pr(2)=0.20; for Chinese, Pr(l)=0.84, Pr(2)=0.16.


What's the payoff in hypertension research?


On the lead content of human hair (1871-1971).


Relationship of serum uric acid to achievement motivation.


Personality syles in the postoperative course.


Prolonged pre-avoidance effects upon blood pressure and heart rate in the dog.


Hypertension and personality.

Hypertension and personality.


Psychobiologic factors and individual survival on chronic renal hemodialysis. A two year follow-up. I.


The affective responses of obese patients to weight reduction: a differentiation based on age at onset of obesity.


Contrast sensitivity near borders: significance of test stimulus form, size and duration.


Inhibition of visual units in the crayfish.


The effects of edge sharpness and exposure duration on detection threshold.


Visual interference in the parafoveal recognition of initial and final letters of words.