Behavioural effects of a prolonged treatment with small doses of morphine in cats.
D000818:Animals; D002415:Cats; D003216:Conditioning, Operant / Q000187:drug effects*; D003916:Dextromoramide / Q000494:pharmacology; D004361:Drug Tolerance; D005260:Female; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D011600:Psychopharmacology
D009020:Morphine; D003916:Dextromoramide