Affiliation: | (1) Department of Molecular Biology, Institute of Gerontology, Nippon Medical School, 1-396, Kosugi-cho, Nakahara-ku, Kawasaki 211-8533, Japan Tel. +81-44-733-5230; Fax +81-44-733-5192 e-mail: memi@nms.ac.jp., JP;(2) Department of Orthopedics, Nippon Medical School, Sendagi, Bunkyo-ku Tokyo 113-8603, Japan, JP |