Affiliation: | 1. Tokyo Research Laboratories, Kyowa Hakko Kogyo Co., Ltd., 3-6-6 Asahimachi, Machidashi Tokyo 194, Japan;2. Department of Biochemistry, Kumamoto University School of Medicine, 2–2–1 Honjo, Kumamoto 860, Japan;3. Department of Biochemistry, Institute for Medical Immunology, Kumamoto University School of Medicine, 2–2–1 Honjo, Kumamoto 860, Japan |