1. Department of Molecular Biology (Y.Shim., K.Mi., H.O., T.B., S.M., Y.Shis., K.Mo.),Kyushu University, Fukuoka 812-8582,
2. Japan Laboratory of Integrative Brain Sciences (S.H., K.T.),Department of Biology, Waseda University, and Center for Medical Life Science of Waseda University, Tokyo 162-8480, Japan;
3. Department of Bioengineering (T.A., T.T.), Graduate School of Engineering, Osaka City University, Osaka 558-8585, Japan;
4. Department of Orthopedics (H.A.), Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan