1. Departments of Urology and Biochemistry, Boston University School of Medicine, 700 Albany Street, Boston, Massachusetts 02118, Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, Department of Biochemistry, Temple University School of Medicine, Philadelphia, Pennsylvania 19140, Department of Molecular Genetics and Biochemistry, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261, and the Wistar Institute,...