title: Interaction between serotonin and morphine in the guinea-pig ileum.
mesh_terms: D000698:Analgesia; D000818:Animals; D004305:Dose-Response Relationship, Drug; D004347:Drug Interactions; D004357:Drug Synergism; D004558:Electric Stimulation; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects*; D066298:In Vitro Techniques; D008238:Lysergic Acid Diethylamide / Q000494:pharmacology; D009020:Morphine / Q000494:pharmacology*; D009130:Muscle, Smooth / Q000187:drug effects; D009638:Norepinephrine / Q000494:pharmacology; D012701:Serotonin / Q000008:administration & dosage / Q000494:pharmacology*; D012702:Serotonin Antagonists
chemical_list: D012702:Serotonin Antagonists; D012701:Serotonin; D009020:Morphine; D008238:Lysergic Acid Diethylamide; D009638:Norepinephrine