1. From the Department of Medicine, Section of Cardiology (G.M., P.T.T., J.J.R., Z.H., Y.H.F., T.T., L.P., H.J.Z., E.M., S.L.A.), Department of Pathology (J.P.), Electron Microscopy Facility (Y.C.), and Departments of Medicine and Pharmacology (J.R.), University of Illinois at Chicago, Chicago, IL; Vascular Biology Group (X.W.), University of Alberta, Edmonton, Alberta, Canada; Section of Cardiology (E.K.W.), VA Medical Center and University of Minnesota, Minneapolis, MN.