title: Effects of morphine, naloxone, and diallylnormorphine upon behaviour maintained by electric-shock postponement in squirrel monkeys.
mesh_terms: D000818:Animals; D001362:Avoidance Learning / Q000187:drug effects*; D003216:Conditioning, Operant / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D004361:Drug Tolerance; D004597:Electroshock; D000882:Haplorhini; D008297:Male; D009020:Morphine / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D009269:Nalorphine / Q000031:analogs & derivatives* / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology*; D012453:Saimiri
chemical_list: D009270:Naloxone; C012881:diallylnormorphinium bromide; D009020:Morphine; D009269:Nalorphine