Objective:To detect the expression of O6-methylguanine-DNA methyltransferase (MGMT),and it s effect of promoter hypermethylation on tumorigenesis and progression.

• 目的:检测大肠癌组织中O6-甲基鸟嘌呤-DNA甲基转移酶(MGMT)的表达情况及其在肿瘤发生发展中的作用和临床意义。