Objective To observe the effect of selenium on the ACTH positive cells in the pars distalis of pituitary of rat with colon mucosa cancer induced by azoxymethane(AOM).

• 摘要 目的 观察硒对致癌剂氧化偶氮甲烷（AOM）所致大鼠结肠癌形成过程中，垂体远侧部ACTH阳性细胞的影响。