[1] Department of Molecular Biology,
[2] Institute of Gerontology,undefined
[3] Nippon Medical School,undefined
[4] 1-396,undefined
[5] Kosugi-cho,undefined
[6] Nakahara-ku,undefined
[7] Kawasaki 211-8533,undefined
[8] Japan Tel. +81-44-733-5230; Fax +81-44-733-5192; e-mail: memi@nms.ac.jp.,undefined
[9] Department of Orthopedics,undefined
[10] Nippon Medical School,undefined
[11] Sendagi,undefined
[12] Bunkyo-ku,undefined
[13] Tokyo,undefined
[14] Japan,undefined