title: 5-hydroxyindole levels in the blood and CSF in Down's syndrome, phenylketonuria and severe mental retardation.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000097:blood / Q000134:cerebrospinal fluid / Q000378:metabolism*; D005260:Female; D006801:Humans; D006897:Hydroxyindoleacetic Acid / Q000134:cerebrospinal fluid*; D008607:Intellectual Disability / Q000097:blood / Q000134:cerebrospinal fluid / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D010649:Phenylalanine / Q000097:blood / Q000134:cerebrospinal fluid; D010661:Phenylketonurias / Q000097:blood / Q000134:cerebrospinal fluid / Q000378:metabolism*; D011011:Pneumoencephalography; D012701:Serotonin / Q000097:blood / Q000134:cerebrospinal fluid / Q000378:metabolism*
chemical_list: D012701:Serotonin; D010649:Phenylalanine; D006897:Hydroxyindoleacetic Acid