Affiliation: | (1) Advanced Science Research Center, Japan Atomic Energy Research Institute, Toukai-mura, 319-11 Ibaraki-ken, Japan;(2) Showa College of Pharmaceutical Sciences, Higashi-Tamagawagakuen, Machida-shi, 194 Tokyo, Japan;(3) Faculty of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, 113 Tokyo, Japan |