Investigation of atypical phenylketonuria.
D006801:Humans; D006900:Hydroxylation; D010649:Phenylalanine / Q000378:metabolism; D010651:Phenylalanine Hydroxylase / Q000172:deficiency; D010661:Phenylketonurias / Q000175:diagnosis*
D010649:Phenylalanine; D010651:Phenylalanine Hydroxylase