Possible neural projections from enterochromaffin cells.
D002838:Chromaffin System / Q000502:physiology*; D004064:Digestive System / Q000294:innervation; D004759:Enterochromaffin Cells / Q000032:analysis / Q000502:physiology*; D006801:Humans; D018377:Neurotransmitter Agents / Q000032:analysis; D012701:Serotonin / Q000032:analysis
D018377:Neurotransmitter Agents; D012701:Serotonin