From the Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan; the Department of Molecular Cell Biology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan; Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co, Ltd, Shizuoka, Japan; and the Department of Medicine III, Osaka University Medical School, Osaka, Japan.(1998-05-01時点)