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Alterations in rat brain [3H]-TCP binding following chronic phencyclidine administration.
Rats were chronically infused with phencyclidine (PCP, 13.3 mg PCP.HCl/kg/day) or saline, s.c., for 10 days using osmotic minipumps (n = 5 for each group). Twenty-four hours after the cessation ofExpand
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EMBRYOS AND EVOLUTION
This chapter describes embryos and their evolution. Animal evolution has produced and is producing a great variety of animal forms. The ways in which this variation appears in the life history of theExpand
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Force-time parameters and physical growth of boys ages 6 to 12 years.
Abstract Boys (N = 59) in the 6 to 12 yr age range served as subjects in a study to ascertain the influence of body size and composition on peak force and maximal rate of static strength exertion asExpand
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DEVELOPMENT OF FISHES
This chapter discusses the development of fishes. The eggs of teleost fishes are more or less telolecithal, that is, there is a large mass of yolk with a relatively small yolk-free blastodis sittingExpand
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THE HEART AND VASCULAR SYSTEM
This chapter discusses the heart and vascular system. In the mesoderm of all vertebrates, there are blood vessels. In almost all forms, the arrangement of these vessels is related very closely to theExpand
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Effects of terminating chronic phencyclidine on schedule-controlled behavior in rats
Six rats were trained to respond under a multiple fixed-ratio 30, fixed-interval 3-min schedule for food presentation. Acute administration of phencyclidine (0.1-3.2 mg/kg, IP) produced decreases inExpand
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THE NERVOUS SYSTEM
This chapter discusses the nervous system. The induction and early development of the primitive neural tube have already been described for the frog and are similar in most vertebrates except theExpand
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THE URINOGENITAL SYSTEM
This chapter describes the urinogenital system. The rudiment of the excretory system in the tadpole arises well before hatching as a longitudinal thickening of the somatic mesoderm on each side ofExpand
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Tree-growth regulators help control cost of vegetation management
EARLY DEVELOPMENT OF OTHER MAMMALS
This chapter discusses the early development of other mammals. In the marsupials, the allantois rarely touches the chorion and the placenta is a yolk-sac placenta. The embryonic disc apparentlyExpand