Institution: | (1) Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 20892 Bethesda, MD, USA;(2) Present address: Department of Pediatrics, Georgetown University Medical School, 3800 Reservoir Road, 20007 Washington, D.C., USA;(3) NIH, Building 4, Room 213, 20892 Bethesda, MD, USA |