of molecular biology. Genetics, 153(3), 1071-1076. 35. Ryan, J. L.(2012). Ionizing radiation: the good, the bad, and the ugly. Journal of Investigative Dermatology, 132(3), 985-993. 36. United Nations Scientific Committee on the Effects of Atomic Radiation.(1988). Sources, effects and risks of ionizing radiation. (待续)