title: Dissociation of morphine's analgesic and respiratory depressant actions.
mesh_terms: D000698:Analgesia; D000818:Animals; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009270:Naloxone / Q000031:analogs & derivatives / Q000494:pharmacology; D051381:Rats; D011919:Rats, Inbred Strains; D011957:Receptors, Opioid / Q000187:drug effects; D012119:Respiration / Q000187:drug effects*
chemical_list: D011957:Receptors, Opioid; D009270:Naloxone; D009020:Morphine; C034643:naloxonazine