Background Regular use of aspirin reduces the risk of a colorectal neoplasm, but the mechanism by which aspirin affects carcinogenesis in the colon is not well understood.

• 研究背景：定期服用阿斯匹林降低结直肠癌的风险，但是阿斯匹林影响肠道致癌作用的机制并不是很清楚。