title: Analgesic and other actions of morphine antagonists.
mesh_terms: D000818:Animals; D001952:Bridged-Ring Compounds / Q000494:pharmacology*; D002490:Central Nervous System / Q000187:drug effects; D007977:Levallorphan / Q000494:pharmacology; D009020:Morphine / Q000037:antagonists & inhibitors*; D009269:Nalorphine / Q000494:pharmacology; D010423:Pentazocine / Q000494:pharmacology; D051381:Rats; D013797:Thebaine
chemical_list: D001952:Bridged-Ring Compounds; D013797:Thebaine; D007977:Levallorphan; D009020:Morphine; D010423:Pentazocine; D009269:Nalorphine