title: 5-Hydroxytryptamine in invertebrates.
mesh_terms: D000818:Animals; D000845:Annelida / Q000502:physiology; D001181:Arthropods / Q000502:physiology; D000242:Cyclic AMP / Q000502:physiology; D007448:Invertebrates / Q000502:physiology*; D008974:Mollusca / Q000502:physiology; D018377:Neurotransmitter Agents / Q000502:physiology; D011985:Receptors, Serotonin / Q000502:physiology; D012701:Serotonin / Q000502:physiology*
chemical_list: D018377:Neurotransmitter Agents; D011985:Receptors, Serotonin; D012701:Serotonin; D000242:Cyclic AMP