1. Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central4 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562,
Japan
2. Department of Biotechnology
and Life Science, Tokyo University of Agriculture and Technology, 2-24-26 Naka-cho, Koganei, Tokyo 184-8588,
Japan