Serotonin as a possible neurohumoral agent; evidence obtained in lower animals.
D000818:Animals; D009474:Neurons / Q000502:physiology*; D018377:Neurotransmitter Agents; D012701:Serotonin / Q000502:physiology*
D018377:Neurotransmitter Agents; D012701:Serotonin
NEURONS/physiology; SEROTONIN/physiology