title: Serum 5-hydroxytryptamine (5-HT) in gastro-intestinal diseases.
mesh_terms: D000818:Animals; D005767:Gastrointestinal Diseases / Q000097:blood*; D006801:Humans; D051381:Rats; D012701:Serotonin / Q000097:blood*
chemical_list: D012701:Serotonin