Institution: | (1) Tsukuba Lab., PCC Technology, c/o Tsukuba Res. Labs., Kyowa Hakko Kogyo Co. Ltd., 2 Miyukigaoka Tsukuba, 305 Ibaraki, Japan;(2) Present address: Faculty of Biology Oriented Science, Kinki Univ., 930 Nishimitani, Uchita-cho, Naga-gun, 649-64 Wakayama, Japan;(3) Present address: Tsukuba Res. Labs., Kyowa Hakko Kogyo Co. Ltd., 2 Miyukigaoka, Tsukuba, 305 Ibaraki, Japan |