title: On the possibility that an indoleamine is a neurotransmitter in the gastrointestinal tract.
mesh_terms: D000818:Animals; D001679:Biogenic Amines / Q000502:physiology*; D055598:Chemical Phenomena; D002621:Chemistry; D002838:Chromaffin System / Q000378:metabolism; D004064:Digestive System / Q000294:innervation*; D004299:Dopamine beta-Hydroxylase / Q000378:metabolism; D004558:Electric Stimulation; D006801:Humans; D007211:Indoles / Q000502:physiology*; D007700:Kinetics; D008995:Monoamine Oxidase / Q000378:metabolism; D009474:Neurons / Q000502:physiology; D018377:Neurotransmitter Agents / Q000502:physiology*; D010528:Peristalsis; D012701:Serotonin / Q000502:physiology; D014365:Tryptophan Hydroxylase / Q000378:metabolism; D014664:Vasodilation
chemical_list: D001679:Biogenic Amines; D007211:Indoles; D018377:Neurotransmitter Agents; D012701:Serotonin; D014365:Tryptophan Hydroxylase; D004299:Dopamine beta-Hydroxylase; D008995:Monoamine Oxidase