1. From the Departments of Cell Biology (C.H.B.) and Pathology (Y.S., J.C., K.Y., X.M., J.M.H., P.G.A., Y.C.) and Biostatistics Unit (D.W.), University of Alabama at Birmingham, Birmingham, AL; Department of Medicine, University of California at Los Angeles, Los Angeles, CA (Y.T., L.L.D.); Department of Veterans Affairs Medical Center, Birmingham, AL (Y.C.).