Affiliation: | 1. Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo 1130033 (Japan), Fax: (+81)?3‐5841‐4855;2. Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan) |