1. From the Molecular Cardiology (E.C., A.H., G.C., A.M.Z., S.D.), Department of Internal Medicine III, J. W. Goethe University, Frankfurt, Germany; Department of Neurosurgery (M.V., P.V.), Medical Faculty of the University of Heidelberg, Mannheim, Germany; Department of Molecular Biology and Functional Genomics (M.E.B.), San Raffaele University, Milan, Italy; and Experimental Immunology Branch (T.C.), National Cancer Institute, NIH, Bethesda, MD.