title: A simple in vitro method of characterizing narcotic antagonists.
mesh_terms: D000109:Acetylcholine / Q000037:antagonists & inhibitors / Q000494:pharmacology; D000700:Analgesics / Q000494:pharmacology; D000818:Animals; D001095:Arachidonic Acids / Q000037:antagonists & inhibitors / Q000494:pharmacology; D001681:Biological Assay; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007583:Jejunum / Q000187:drug effects; D009119:Muscle Contraction / Q000187:drug effects*; D009292:Narcotic Antagonists / Q000032:analysis* / Q000494:pharmacology; D010545:Peroxides; D011448:Prostaglandin Antagonists; D011453:Prostaglandins / Q000494:pharmacology
chemical_list: D000700:Analgesics; D001095:Arachidonic Acids; D009292:Narcotic Antagonists; D010545:Peroxides; D011448:Prostaglandin Antagonists; D011453:Prostaglandins; D000109:Acetylcholine