1. Redox Regulation Research Group, Research Center for Radiation Safety, National Institute of Radiological Sciences, Inage-ku, Chiba 263-8555, Japan, Department of Material and Life Science, Graduate School of Engineering, Osaka University, CREST, Japan Science and Technology Agency, Suita, Osaka 565-0871, Japan, Division of Organic Chemistry, National Institute of Health Sciences, Setagaya-ku, Tokyo 158-8501, Japan, and Department of Applied Chemistry, Shibaura Institute of Technology, Minato-ku, Tokyo...