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Author |
Fairhurst, S.; Gallistel, C.R.; Gibbon, J. |
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Title |
Temporal landmarks: proximity prevails |
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Journal Article |
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Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
6 |
Issue |
2 |
Pages |
113-120 |
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Keywords |
Animals; Columbidae; Conditioning, Operant; Reaction Time; *Time Perception |
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Abstract |
Subjects in conditioning experiments time their conditioned responses relative to the onsets of the conditioned stimuli (CSs). These onsets are temporal landmarks, by reference to which subjects may estimate the location of the unconditioned stimulus (US) in time. In a serial compound conditioning paradigm, a long duration CS comes on first, followed later by a second shorter CS, creating both a long-range and a short-range predictor of the US. We ask whether displacing the short-range predictor relative to the long-range predictor causes subjects to strike a compromise between the different temporal locations predicted by the two CSs. In three experiments with pigeons, we varied the training conditions so as to favor or militate against this outcome. However, in all conditions, there was no compromise; after the onset of the displaced short-range CS, the timing of conditioned responding was governed by it alone. This result contrasts with the compromises that are seen when the feeding time predicted by a CS is put in conflict with the time predicted by the circadian clock, and with the similar compromises sometimes seen when a nearby spatial landmark is displaced relative to a larger spatial context. |
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New York State Psychiatric Institute, 1051 Riverside Dr., Unit 50, New York, NY 10032, USA |
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1435-9448 |
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PMID:12720110 |
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Call Number |
Equine Behaviour @ team @ |
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2573 |
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Author |
Henning, J.M.; Zentall, T.R. |
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Title |
Imitation, social facilitation, and the effects of ACTH 4-10 on rats' bar-pressing behavior |
Type |
Journal Article |
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Year |
1981 |
Publication |
The American journal of psychology |
Abbreviated Journal |
Am J Psychol |
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Volume |
94 |
Issue |
1 |
Pages |
125-134 |
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Keywords |
Adrenocorticotropic Hormone/*pharmacology; Animals; Conditioning, Operant/*drug effects; Dose-Response Relationship, Drug; Extinction, Psychological/drug effects; Imitative Behavior/*drug effects; Male; Peptide Fragments/*pharmacology; Rats; *Social Facilitation |
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Abstract |
The effects of ACTH 4-10 on rats' imitation learning was examined during the acquisition and extinction of a bar-press response for water reinforcement. Rats were exposed to either a bar-pressing conspecific (OB), an experimentally naive conspecific (ON), or an empty box (OE) during bar-press acquisition. In a factorial design, each rat was then exposed to one of the same three conditions during extinction. An 80 mcg dose of ACTH 4-10 was administered to half of the rats in each group prior to observation. Performance differences during acquisition were generally small, but significant performance differences during extinction were found. Social facilitation was indicated by the finding that rats extinguished in the presence of a conspecific exhibited significantly greater resistance to extinction than rats extinguished in the presence of an empty box. An imitation effect was also found. Rats that observed a bar-pressing conspecific during both acquisition and extinction (group OB-OB) showed significantly greater resistance top extinction than did groups OB-ON, CB-OE, or OE-OE. There were no significant effects of the hormone, however, relative to saline controls. |
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0002-9556 |
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PMID:6263117 |
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Call Number |
refbase @ user @ |
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267 |
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Author |
Shettleworth, S.J. |
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Title |
Reinforcement and the organization of behavior in golden hamsters: Pavlovian conditioning with food and shock unconditioned stimuli |
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Journal Article |
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Year |
1978 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
4 |
Issue |
2 |
Pages |
152-169 |
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Keywords |
Acoustic Stimulation; Animals; *Behavior, Animal; *Conditioning, Classical; Conditioning, Operant; Cricetinae; *Electroshock; Female; *Food; Male; Punishment; *Reinforcement (Psychology); Reinforcement Schedule |
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Abstract |
The effects of Pavlovian conditioned stimuli (CSs) for food or shock on a variety of behaviors of golden hamsters were observed in three experiments. The aim was to see whether previously reported differences among the behaviors produced by food reinforcement and punishment procedures could be accounted for by differential effects of Pavlovian conditioning on the behaviors. There was some correspondence between the behaviors observed to the CSs and the previously reported effects of instrumental training. However, the Pavlovian conditioned responses (CRs) alone would not have predicted the effects of instrumental training. Moreover, CRs depended to some extent on the context in which training and testing occurred. These findings, together with others in the literature, suggest that the results of Pavlovian conditioning procedures may not unambiguously predict what system of behaviors will be most readily modified by instrumental training with a given reinforcer. |
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0097-7403 |
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Notes |
PMID:670890 |
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no |
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Call Number |
refbase @ user @ |
Serial |
387 |
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Author |
Zentall, T.R. |
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Title |
Mental time travel in animals: a challenging question |
Type |
Journal Article |
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Year |
2006 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
72 |
Issue |
2 |
Pages |
173-183 |
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Keywords |
Animals; *Behavior, Animal; Columbidae; Concept Formation; Conditioning, Operant; *Imagination; *Memory; Mental Recall; Planning Techniques; Rats; *Time Perception; Transfer (Psychology) |
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Abstract |
Humans have the ability to mentally recreate past events (using episodic memory) and imagine future events (by planning). The best evidence for such mental time travel is personal and thus subjective. For this reason, it is particularly difficult to study such behavior in animals. There is some indirect evidence, however, that animals have both episodic memory and the ability to plan for the future. When unexpectedly asked to do so, animals can report about their recent past experiences (episodic memory) and they also appear to be able to use the anticipation of a future event as the basis for a present action (planning). Thus, the ability to imagine past and future events may not be uniquely human. |
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Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA. zentall@uky.edu |
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0376-6357 |
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PMID:16466863 |
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no |
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Call Number |
refbase @ user @ |
Serial |
218 |
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Author |
Koba, R.; Izumi, A. |
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Title |
Sex categorization of conspecific pictures in Japanese monkeys (Macaca fuscata) |
Type |
Journal Article |
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Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
9 |
Issue |
3 |
Pages |
183-191 |
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Keywords |
Animals; Conditioning, Operant; *Discrimination (Psychology); Female; *Generalization (Psychology); Macaca/*psychology; Male; *Pattern Recognition, Visual; Photography; Recognition (Psychology); *Sex Characteristics |
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Abstract |
We investigated whether monkeys discriminate the sex of individuals from their pictures. Whole-body pictures of adult and nonadult monkeys were used as stimuli. Two male Japanese monkeys were trained for a two-choice sex categorization task in which each of two choice pictures were assigned to male and female, respectively. Following the training, the monkeys were presented with novel monkey pictures, and whether they had acquired the categorization task was tested. The results suggested that while monkeys discriminate between the pictures of adult males and females, discrimination of nonadult pictures was difficult. Partial presentations of the pictures showed that conspicuous and sexually characteristic parts (i.e., underbellies including male scrotums or breasts including female nipples) played an important role in the sex categorization. |
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Primate Research Institute, Kyoto University, Kanrin 41, Inuyama, 484-8506, Japan |
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1435-9448 |
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Notes |
PMID:16612631 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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2470 |
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Author |
Grandin, T. |
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Title |
Safe handling of large animals |
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Journal Article |
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Year |
1999 |
Publication |
Occupational Medicine (Philadelphia, Pa.) |
Abbreviated Journal |
Occup Med |
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Volume |
14 |
Issue |
2 |
Pages |
195-212 |
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Keywords |
Accidents, Occupational/*prevention & control/statistics & numerical data; Aggression/physiology/psychology; Animal Husbandry/*methods; Animals; *Behavior, Animal/physiology; Cattle; Conditioning, Operant/physiology; Crowding/psychology; Fear/physiology/psychology; Female; *Horses/physiology/psychology; Humans; Male; Movement/physiology; *Occupational Health; Risk Factors; *Ruminants/physiology/psychology |
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Abstract |
The major causes of accidents with cattle, horses, and other grazing animals are: panic due to fear, male dominance aggression, or the maternal aggression of a mother protecting her newborn. Danger is inherent when handling large animals. Understanding their behavior patterns improves safety, but working with animals will never be completely safe. Calm, quiet handling and non-slip flooring are beneficial. Rough handling and excessive use of electric prods increase chances of injury to both people and animals, because fearful animals may jump, kick, or rear. Training animals to voluntarily cooperate with veterinary procedures reduces stress and improves safety. Grazing animals have a herd instinct, and a lone, isolated animal can become agitated. Providing a companion animal helps keep an animal calm. |
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Department of Animal Science, Colorado State University, Fort Collins 80526, USA |
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0885-114X |
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PMID:10329901 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3793 |
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Author |
Shettleworth, S.J.; Plowright, C.M. |
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Title |
How pigeons estimate rates of prey encounter |
Type |
Journal Article |
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Year |
1992 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
18 |
Issue |
3 |
Pages |
219-235 |
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Keywords |
Analysis of Variance; Animals; *Appetitive Behavior; Columbidae; Conditioning, Operant; Food Preferences/*psychology; Motivation; *Predatory Behavior; *Probability Learning; *Reinforcement Schedule; Social Environment |
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Abstract |
Pigeons were trained on operant schedules simulating successive encounters with prey items. When items were encountered on variable-interval schedules, birds were more likely to accept a poor item (long delay to food) the longer they had just searched, as if they were averaging prey density over a short memory window (Experiment 1). Responding as if the immediate future would be like the immediate past was reversed when a short search predicted a long search next time (Experiment 2). Experience with different degrees of environmental predictability appeared to change the length of the memory window (Experiment 3). The results may reflect linear waiting (Higa, Wynne, & Staddon, 1991), but they differ in some respects. The findings have implications for possible mechanisms of adjusting behavior to current reinforcement conditions. |
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Department of Psychology, University of Toronto, Ontario, Canada |
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0097-7403 |
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PMID:1619391 |
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no |
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refbase @ user @ |
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382 |
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Author |
Shanahan, S. |
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Title |
Trailer loading stress in horses: behavioral and physiological effects of nonaversive training (TTEAM) |
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Journal Article |
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Year |
2003 |
Publication |
Journal of Applied Animal Welfare Science : JAAWS |
Abbreviated Journal |
J Appl Anim Welf Sci |
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Volume |
6 |
Issue |
4 |
Pages |
263-274 |
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Keywords |
Animals; *Conditioning, Operant; *Escape Reaction; Female; Heart Rate; Horses/*psychology; Hydrocortisone/metabolism; Male; Saliva/metabolism; Stress/metabolism/prevention & control/*veterinary; *Transportation |
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Abstract |
Resistance in the horse to trailer loading is a common source of stress and injury to horses and their handlers. The objective of this study was to determine whether nonaversive training based on the Tellington-Touch Equine Awareness Method (TTEAM; Tellington-Jones &Bruns, 1988) would decrease loading time and reduce stress during loading for horses with a history of reluctance to load. Ten horses described by their owners as “problem loaders” were subjected to pretraining and posttraining assessments of loading. Each assessment involved two 7-min loading attempts during which heart rate and saliva cortisol were measured. The training consisted of six 30-min sessions over a 2-week period during which the horse and owner participated in basic leading exercises with obstacles simulating aspects of trailering. Assessment showed heart rate and saliva cortisol increased significantly during loading as compared to baseline (p <.001 and p <.05, respectively). Reassessment after training showed a decrease in loading time (p <.02), reduced heart rate during loading (p <.002), and reduced saliva cortisol as compared to pretraining assessments. Seven “good loaders” also were subject to loading assessment for physiological comparison. Increases in heart rate during loading were significantly higher in the good loaders (p <.001). Nonaversive training simulating aspects of loading may effectively reduce loading time and stress during loading for horses with a history of resistance to trailer loading. |
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shanahandvm@yahoo.ca |
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1088-8705 |
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PMID:14965781 |
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1903 |
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Author |
Zentall, T.R.; Kaiser, D.H.; Clement, T.S.; Weaver, J.E.; Campbell, G. |
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Title |
Presence/absence-sample matching by pigeons: divergent retention functions may result from the similarity of behavior during the absence sample and the retention interval |
Type |
Journal Article |
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Year |
2000 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
26 |
Issue |
3 |
Pages |
294-304 |
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Keywords |
Analysis of Variance; Animals; *Behavior, Animal; *Choice Behavior; *Columbidae; *Conditioning, Operant; Cues |
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Abstract |
Divergent choose-absence retention functions typically found in pigeons following presence/absence-sample matching have been attributed to the development of a single-code/default coding strategy. However, such effects may result from adventitious differential responding to the samples. In Experiment 1, retention functions were divergent only when differential sample responding could serve as the basis for comparison choice. In Experiment 2, when pecking did not occur during the retention interval, a choose-absence bias was found, but when pecking occurred during the retention interval, a choose-presence bias resulted. In Experiment 3, positive transfer was found when a stimulus associated with the absence of pecking replaced the absence sample but not when a stimulus associated with pecking replaced the presence sample. Thus, presence/absence-sample matching may not encourage the development of a single-code/default coding strategy in pigeons. |
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Department of Psychology, University of Kentucky, Lexington 40506, USA. zentall@pop.uky.edu |
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0097-7403 |
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PMID:10913994 |
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refbase @ user @ |
Serial |
247 |
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Author |
Nevin, J.A.; Shettleworth, S.J. |
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Title |
An analysis of contrast effects in multiple schedules |
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Journal Article |
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Year |
1966 |
Publication |
Journal of the experimental analysis of behavior |
Abbreviated Journal |
J Exp Anal Behav |
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9 |
Issue |
4 |
Pages |
305-315 |
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Animals; Birds; *Conditioning (Psychology); Conditioning, Operant; Discrimination Learning; *Extinction, Psychological; Male; Reaction Time; *Reinforcement (Psychology) |
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0022-5002 |
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PMID:5961499 |
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refbase @ user @ |
Serial |
392 |
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