title: The contractive mechanism of serotonin in the guinea pig isolated intestine; with special reference to its concentration-action curve.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D001464:Barium / Q000494:pharmacology; D002746:Chlorpromazine / Q000494:pharmacology; D003042:Cocaine / Q000494:pharmacology
chemical_list: D001464:Barium; D001285:Atropine; D003042:Cocaine; D000109:Acetylcholine; D002746:Chlorpromazine