Fig. 3

Case studies to show response during the test phase in eight BH4-responsive patients. BH4: Tetrahydrobiopterin; Phe: Phenylalanine. P1–8, patients 1–8
Case studies to show response during the test phase in eight BH4-responsive patients. BH4: Tetrahydrobiopterin; Phe: Phenylalanine. P1–8, patients 1–8