1. From the Gladstone Institute of Cardiovascular Disease (H.D.L., S.K.W., Q.W., S.G.Y.); the Cardiovascular Research Institute, University of California, San Francisco (H.D.L., S.G.Y., J.S.W., R.L.H.); the Department of Medicine, University of California, San Francisco (H.D.L., S.G.Y.); and the Department of Anatomy, University of California, San Francisco (R.L.H.), San Francisco, Calif; the Poultry Science Department, Texas A&M University, College Station, Tex (R.L.W.); and the Cardiovascular...