1. Division of Material and Biological Sciences, Graduate School of Science; Japan Women's University; Bunkyo-ku
2. Department of Biology, Graduate School of Science; Kobe University; Kobe Hyogo Japan
3. Electron Microscope Institution; Japan Women's University; Bunkyo-ku Japan
4. Department of General Systems Studies, Graduate School of Arts and Sciences; University of Tokyo; Meguro-ku Tokyo Japan
5. Department of Chemical and Biological Sciences, Faculty of Science; Japan Women's University; Bunkyo-ku Japan