One out of 5 colorectal adenomas (25.0%) and 15 out of 29 colorectal cancers (51.0%) showed loss of DCC mRNA expression.

• 结果：5例大肠腺瘤和29例大肠癌组织中分别有1例（20%25）、15例（51.；7%25）DCC基因mR－NA表达发生缺失。