1. From the Departments of Medicine, Section of Cardiovascular Sciences (J.A., J.C.A.), Molecular and Cellular Biology (J.A., C.D., K.K.H.), Pediatrics (C.D., K.K.H.), and Molecular Physiology and Biophysics (J.C.A.) and the DeBakey Heart Center (J.C.A.), Baylor College of Medicine, and the Institute of Molecular Medicine, University of Texas (R.I.D., P.A.D.), Houston, Tex; and the Department of Pharmacology, Medical College of Ohio, Toledo (L.L.). Dr Abramowitz is now at the Division of Intramural...