Affiliation: | (1) Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Building 4, Room 329, 20892-0460 Bethesda, Maryland, USA;(2) National Institute of Allergy and Infectious Diseases, National Institutes of Health, Laboratory of Immunopathology, 20892 Bethesda, Maryland, USA |