title: Depressant effects of topical morphine on self-stimulation-related units in hypothalamus.
mesh_terms: D000287:Administration, Topical; D000818:Animals; D003864:Depression, Chemical; D007031:Hypothalamus / Q000502:physiology*; D008297:Male; D009020:Morphine / Q000008:administration & dosage / Q000134:cerebrospinal fluid / Q000494:pharmacology*; D009270:Naloxone / Q000494:pharmacology; D051381:Rats; D012653:Self Stimulation / Q000187:drug effects*; D013378:Substantia Nigra / Q000502:physiology
chemical_list: D009270:Naloxone; D009020:Morphine