Affiliation: | 1. Biology Division, National Cancer Center Research Institute, Tsukiji 5-chome, Chuo-ku, Tokyo, Japan;2. Forschungslaboratorien der ScheringAG, Berlin/Bergkamen 1 Berlin 65, Mullerstrasse 170-178, FRG;3. Faculty of Pharmaceutical Sciences, Tokyo University, Hongo 7-chome, Bunkyo-ku, Tokyo, Japan |