title: A mild case of dihydropteridine reductase deficiency with residual activity in erythrocytes.
mesh_terms: D001708:Biopterins / Q000031:analogs & derivatives; D004093:Dihydropteridine Reductase / Q000097:blood; D004912:Erythrocytes / Q000201:enzymology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007231:Infant, Newborn; D009247:NADH, NADPH Oxidoreductases / Q000172:deficiency*; D010649:Phenylalanine / Q000097:blood; D010661:Phenylketonurias; D014443:Tyrosine / Q000097:blood
chemical_list: D001708:Biopterins; D014443:Tyrosine; D010649:Phenylalanine; D004093:Dihydropteridine Reductase; D009247:NADH, NADPH Oxidoreductases; C003402:sapropterin