title: Asymmetrical effects of morphine and naloxone on reward mechanisms.
mesh_terms: D000818:Animals; D002755:Choice Behavior / Q000187:drug effects; D004292:Dominance, Cerebral / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D004558:Electric Stimulation; D005260:Female; D006801:Humans; D007026:Hypothalamic Area, Lateral / Q000187:drug effects; D009020:Morphine / Q000494:pharmacology*; D009270:Naloxone / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains; D012653:Self Stimulation / Q000187:drug effects*; D013239:Stereotyped Behavior / Q000187:drug effects*
chemical_list: D009270:Naloxone; D009020:Morphine