1. Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
2. Department of Molecular and Cellular Physiology, Graduate School of Medicine, Kyoto University, Yoshida
Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan