1. From the Departments of Pediatrics and of Molecular and Cellular Biology (K.K.H.), Center for Cell & Gene Therapy and Children’s Nutrition Research Center, Baylor College of Medicine, Houston, Tex; and the Department of Pediatrics (D.A.I., M.C.Y.), Herman B. Wells Center for Pediatric Research, Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis.