Affiliation: | (1) Department of Applied Biological Chemistry, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, 113 Tokyo, Japan;(2) Present address: Yakult Central Institute for Microbiological Research, 186 Tokyo, Japan;(3) Present address: Department of Microbiology and Immunology, Jefferson Cancer Institute, Jefferson Medical College, 19107-5541 Philadelphia, Pennsylvania;(4) Present address: School of Food and Nutritional Sciences, University of Shizuoka, 422 Shizuoka, Japan |