The yield of DSB in deproteinized DNA is 0 40 DSBs/100 Mbp/Gy,while that in the intact cells is 0 19 DSBs/100 Mbp/Gy.

• 辐照脱蛋白 DNA诱导的 DSB产额为 0 .；4 0 DSBs/1 0 0 Mbp/Gy；辐照完整细胞诱导的 DSB产额约为 0