目的观察长波紫外线引起人表皮样癌细胞DNA链断裂损伤的情况，以及姜黄素对这种损伤的拮抗作用。
Objective To investigate the antagonistic effect of curcumin on DNA damage in human epidermoid carcinoma cells induced by long-wavelength ultraviolet (UVA).
目的观察长波紫外线引起人表皮癌细胞DNA链断裂损伤的情况，以及槲皮素对这种损伤的预防作用。
Objective To investigate the preventive effect of quercetin on DNA damage in human epidermoid carcinoma cells induced by ultraviolet a (UVA).
NBS1作为MRE11/RAD50/NBS1复合物的组分之一，是细胞应答DNA损伤的一个关键蛋白质，在DNA双链断裂修复和维持基因组稳定中发挥重要的作用。
The NBS1 is a component of the MRE11/RAD50/NBS1 complex (MRN) and plays a critical role in the DNA double strand break (DSB) repair and the maintenance of chromosomal integrity.
许多分子能与核酸发生相互作用，破坏其模板作用，使核酸链断裂，进而影响基因调控和表达功能。
Many small molecular can interact with nucleic acid, make it rupture and affect the gene's function of adjust, control and expression.
此外，高温蒸汽可能通过使沥青质发生烷基侧链断裂反应降低沥青质含量而CO2通过溶解作用改变胶团结构来实现降黏作用。
In addition, the viscosity-reducing effect of high temperature steam and CO2 is achieved by breaking asphaltenes'alkyl-side-chain and by changing micellar structure.
结果表明，所测的各种工业废水均含有DNA损伤剂，能够诱发培养的V79细胞dna链断裂，其中以制革厂废水的DNA损伤作用最强。
The results showed that all industrial wastewaters tested contained some DNA damage agents and could induce DNA strand breaks of V79 cells that were cultured in bottles.
结果表明，所测的各种工业废水均含有DNA损伤剂，能够诱发培养的V79细胞dna链断裂，其中以制革厂废水的DNA损伤作用最强。
The results showed that all industrial wastewaters tested contained some DNA damage agents and could induce DNA strand breaks of V79 cells that were cultured in bottles.
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