Distribution of 5-hydroxytryptamine (serotonin, enteramine) in the wall of the digestive tract.
D041981:Gastrointestinal Tract / Q000502:physiology*; D006801:Humans; D012701:Serotonin / Q000378:metabolism*
D012701:Serotonin
GASTROINTESTINAL SYSTEM/physiology; SEROTONIN/metabolism