1. Department of Bioscience and Bioinformatics; Kyushu Institute of Technology, 680-4 Kawazu; Iizuka, Fukuoka Japan
2. Medical Institute of Bioregulation; Kyushu University, 3-1-1 Maidashi, Higashi-Ku; Fukuoka Japan
3. Graduate School of Faculty of Medicine; Osaka City University, 1-4-3 Asahi-Machi, Abeno-Ku; Osaka Japan
4. Application Laboratory; FEI Company Japan Ltd, 2-13-34 Konan; Minato-Ku Tokyo Japan
5. Research Center for Ultra-High Voltage Electron Microscopy; Osaka University, 7-1, Mihogaoka, Ibaraki; Osaka Japan