Affiliation: | (1) Section of Serology, Institute of Immunological Science, Hokkaido University, Sapporo, Japan;(2) Department of Cell Biology and Microbiology, Division of Biochemistry, Institute of Bio-Active Science, Nippon Zoki Pharmaceutical Co., Ltd., Hyogo, Japan;(3) Department of Pathology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan;(4) Department of Cell Regulation, Division of Virology and Immunology, Medical Research Institute, Tokyo Medical and Dental University, Yushima, Tokyo, Japan |