Affiliation: | (1) Department of Molecular Biology and Biotechnology, Graduate School of Pharmaceutical Sciences, Chiba University, Yayoi-cho 1-33, Inage-ku, Chiba 263-8522 (Japan), Fax + 81 43 290 2905, e-mail: mamiy@p.chiba-u.ac.jp, ksaito@p.chiba-u.ac.jp, JP |