title: [Effect of serotonin on the contracting mechanism of the excised small intestine of guinea pigs analysed by its concentration-action curve].
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology*; D000779:Anesthetics, Local / Q000494:pharmacology; D000818:Animals; D001464:Barium / Q000494:pharmacology*; D004339:Drug Compounding; D005730:Ganglionic Blockers / Q000494:pharmacology; D006168:Guinea Pigs; D006632:Histamine / Q000494:pharmacology*; D066298:In Vitro Techniques; D007421:Intestine, Small / Q000187:drug effects*; D009020:Morphine / Q000494:pharmacology; D009538:Nicotine / Q000494:pharmacology*; D012701:Serotonin / Q000494:pharmacology*
chemical_list: D000779:Anesthetics, Local; D005730:Ganglionic Blockers; D001464:Barium; D012701:Serotonin; D009538:Nicotine; D009020:Morphine; D006632:Histamine; D000109:Acetylcholine