title: Conditioned temperature effects using morphine as the unconditioned stimulus.
mesh_terms: D000818:Animals; D001831:Body Temperature / Q000187:drug effects*; D003213:Conditioning, Psychological / Q000187:drug effects*; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009270:Naloxone / Q000494:pharmacology; D051381:Rats; D013997:Time Factors
chemical_list: D009270:Naloxone; D009020:Morphine