*Toshinori Matsuoka1, Miwako Yamasaki2, Manabu Abe3, Yukiko Matsuda4, Hiroyuki Morino4, Hideshi Kawakami4, Kenji Sakimura3, Masahiko Watanabe2, Kouichi Hashimoto1
(1.Department of Neurophysiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan, 2.Department of Anatomy, Hokkaido University Graduate School of Medicine, Sapporo, Japan, 3.Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan, 4.Department of Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan)