放射线疗法，是一种用能穿透癌细胞DNA的射线能量杀死癌细胞，或者阻止其繁殖的疗法，该疗法一直存在一个缺点，即对周围健康组织造成间接的损害。
RADIOTHERAPY, the use of radiation zipping through the DNA of cancer cells to kill them or halt their reproduction, has always had the disadvantage of causing collateral damage to healthy tissue.
美国国家航空航天局运行的月亮神望远镜探测到的X射线图象仅仅提供了间接的证据。
The X-ray signature detected by NASA's orbiting Chandra telescope provides only indirect evidence.
结论：视神经间接损伤后，早期适量的X射线局部照射能有效地抑制胶质细胞的反应性增生，能明显地促进神经轴突的结构再生。
It is suggested that early proper X-ray irradiation on the injured optic nerve can effectively inhibit the proliferation of astrocytes and obviously promote the axonal regeneration of optic nerve.
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