title: Tryptophan metabolism in untreated phenylketonuria.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007211:Indoles / Q000652:urine; D007737:Kynurenine / Q000378:metabolism; D010661:Phenylketonurias / Q000378:metabolism*; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D007211:Indoles; D007737:Kynurenine; D014364:Tryptophan