肿瘤的发生是一个复杂的过程,除了外界环境致癌物质影响外,机体的内在因素也起了一个非常重要的作用。当人们长期接触环境中的致癌物时,致癌物质就会对人体内的基因造成各种损伤,从而影响基因的正常复制、转录和表达。长时间积累就会导致细胞出现非正常增殖进而形成肿瘤。而DNA损伤修复基因在逆转这个过程中则起了非常重要的作用,它可以修复损伤的基因,防止细胞非正常增 Tumor occurrence is a complex process, in addition to the external environment, the impact of carcinogens, the body’s internal factors also played a very important role. When people have long-term exposure to carcinogens in the environment, carcinogens cause various damage to the genes in the human body, thereby affecting normal gene transcription, transcription and expression. Prolonged accumulation will lead to abnormal cell proliferation and the formation of tumors. The DNA damage repair gene in the process of reversing the play a very important role, it can repair the damaged genes, to prevent abnormal cell growth