title: Mental retardation and elevated serotonin levels in adults.
mesh_terms: D000328:Adult; D006801:Humans; D008607:Intellectual Disability / Q000097:blood* / Q000150:complications; D012640:Seizures / Q000097:blood / Q000150:complications; D012701:Serotonin / Q000097:blood*
chemical_list: D012701:Serotonin