1. From the Department of Molecular Genetics, Biochemistry, and Microbiology (S.R., R.P.H.A., G.J., D.F.W.), University of Cincinnati Medical Center, Cincinnati, Ohio; Department of Pathology and Laboratory Medicine (G.P.B.), University of Cincinnati Medical Center, Ohio; Department of Physiology and Biophysics (D.U., G.M.A., B.M.W., R.J.S.), University of Illinois, Chicago College of Medicine; and Department of Medicine (N.P., S.B.L.), University of Maryland, Baltimore.