1. From the Wallenberg Laboratory for Cardiovascular Research (C.F., M.G., J.B.), The Sahlgrenska Academy at Göteborg University, Göteborg, Sweden; the Gladstone Institute of Cardiovascular Disease (R.E.P., L.A.), Cardiovascular Research Institute and the Department of Pathology (R.E.P.), University of California, San Francisco; and the Department of Poultry Science (R.L.W.), Texas A&M University, Kleberg Center, College Station, TX.