Background Phenylketonuria (PKU) is an inborn error of metabolism caused by deficient activity of phenylalanine hydroxylase. In Brazil. the National Neonatal Screening Program enables early treatment of patients with PKU. which prevents them from developing severe neurological damage and mental disabilities. https://www.animationbengal.com/?w=deal-time-the-best-of-shirley-temple-vol-ii-online-now-super-choice