Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, Department of Infectious Diseases and Applied Immunology, Institute of Medical Science, The University of Tokyo, University of Tokyo - Department of Infectious Diseases and Applied Immunology and University of Tokyo - Division of Virology