Emergence of cancer relates not only to activation of oncogene,inactivation of anti-oncogene and metabolic enzyme gene,but also to DNA repair gene which plays an important role in stability of DNA.

• 癌症的发生不但与癌基因激活、抑癌基因失活、代谢酶基因异常有关,与修复酶基因可能也有关系,因而也日益受到关注。