title: Evaluation of new compounds for opioid activity (1985).
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism; D002415:Cats; D004192:Discrimination, Psychological; D005048:Etorphine / Q000378:metabolism; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects / Q000502:physiology; D008253:Macaca mulatta; D008297:Male; D009119:Muscle Contraction; D009294:Narcotics / Q000008:administration & dosage / Q000494:pharmacology / Q000633:toxicity*; D051381:Rats; D011957:Receptors, Opioid / Q000187:drug effects / Q000378:metabolism; D012646:Self Administration; D014649:Vas Deferens / Q000187:drug effects / Q000502:physiology
chemical_list: D009294:Narcotics; D011957:Receptors, Opioid; D005048:Etorphine