Tsuneyoshi Kuroiwa Biological Imaging Center, Japan Women’s University Tokyo, Japan Shinya Miyagishima Department of Cell Genetics, National Institute of Genetics Shizuoka, Japan Sachihiro Matsunaga Dept of Applied Biological Science, Tokyo University of Science Chiba, Japan Naoki Sato Department of Life Sciences, University of Tokyo Tokyo, Japan Hisayoshi Nozaki Department of Biological Science, University of Tokyo Tokyo, Japan Kan Tanaka Chemical Resources Laboratory, Tokyo Institute of Technology Kanagawa, Japan Osami Misumi Dept of Biological Science and Chemistry, Yamaguchi University Yamaguchi, Japan