title: Letter: A new molecular defect in phenylketonuria.
mesh_terms: D002852:Chromatography, Ion Exchange; D006801:Humans; D007223:Infant; D010649:Phenylalanine / Q000097:blood; D010651:Phenylalanine Hydroxylase / Q000097:blood; D010661:Phenylketonurias / Q000097:blood / Q000209:etiology*
chemical_list: D010649:Phenylalanine; D010651:Phenylalanine Hydroxylase