Pentobarbital and chlordiazepoxide differentiated from each other and from nondrug.
D000818:Animals; D002707:Chlordiazepoxide / Q000494:pharmacology*; D003216:Conditioning, Operant / Q000187:drug effects; D004193:Discrimination Learning / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D005794:Generalization, Response / Q000187:drug effects; D008297:Male; D010424:Pentobarbital / Q000494:pharmacology*; D051381:Rats
D002707:Chlordiazepoxide; D010424:Pentobarbital