title: Problems of phenylketonuria.
mesh_terms: D002675:Child, Preschool; D002855:Chromatography, Thin Layer; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008333:Mandelic Acids / Q000652:urine; D008403:Mass Screening; D010649:Phenylalanine / Q000097:blood; D010661:Phenylketonurias; D010667:Phenylpyruvic Acids / Q000652:urine; D014443:Tyrosine / Q000097:blood
chemical_list: D008333:Mandelic Acids; D010667:Phenylpyruvic Acids; D014443:Tyrosine; D010649:Phenylalanine