Affiliation: | 1. Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo 113‐0033 (Japan);2. Present address: Neo‐Morgan Laboratory Inc., Biotechnology Research Center, Teikyo University, 907 Nogawa, Miyamae‐ku, Kawasaki, Kanagawa 216‐0001 (Japan);3. Graduate School of Science, Hokkaido University, Kita 10 Nishi 8, Sapporo 060‐0810 (Japan);4. Present address: Faculty of Bioresource Sciences, Akita Prefectural University, Akita 010‐0195 (Japan);5. School of Pharmacy, Iwate Medical University, 2‐1‐1 Nishitokuta, Yahaba, Iwate 028‐3694 (Japan), Fax: (+81)?19‐698‐1923 |