title: The toxicity of some of the newer narcotic analgesics.
mesh_terms: D000700:Analgesics / Q000633:toxicity*; D000818:Animals; D006801:Humans; D009020:Morphine / Q000633:toxicity*; D009292:Narcotic Antagonists / Q000633:toxicity*
chemical_list: D000700:Analgesics; D009292:Narcotic Antagonists; D009020:Morphine