Objective: Much evidence show that tumor development is related to the ability of cell 's DNArepairsystem.
目的：许多证据表明肿瘤的发生与细胞DNA损伤修复能力下降有密切关系。
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In addition, it has been found that DNArepairsystem is not only associated with cellular sensitivity to chemotherapy, but also with cellular sensitivity to radiotherapy.
Objective to observe the effects of zinc-deficiency (ZD) on antioxidation system and repair of DNA damage and of hepatic cells by establishing an aging mice model induced with D-galactose.