Affiliation: | From the *Department of Pathology, Hallym Medical School, Choonchun, Kangwon-do, 200-702, Korea; the ‡Howard Hughes Medical Institute and §The Rockefeller University, New York 10021; and the ‖Department of Microbiology and Immunology and the ¶Department of Medicine, Vanderbilt University, Nashville, Tennessee 37232 |