1. From the Departments of Pathology (G.C.B., M.V.T., D.Z., N.R.R., D.C.) and Molecular and Comparative Pathobiology (D.B., K.G.) and Training Program in Immunology (J.G.B.), Johns Hopkins University School of Medicine, Baltimore, Md; W. Harry Feinstone Department of Molecular Microbiology and Immunology (G.C.B., S.S., N.R.R.), Johns Hopkins Bloomberg School of Public Health, Baltimore, Md; and Center for Experimental Medicine and Systems Biology (Y.I.), Institute of Medical Science, University of...