The "pink spot" in schizophrenics and its absence in homocystinurics.
D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D002389:Catatonia / Q000652:urine; D002854:Chromatography, Paper; D002908:Chronic Disease; D004586:Electrophoresis; D005260:Female; D006712:Homocystinuria / Q000652:urine*; D006801:Humans; D008297:Male; D010627:Phenethylamines / Q000652:urine*; D012559:Schizophrenia / Q000652:urine*
D010627:Phenethylamines