Fas and FasL Expression at Different Stages of Epithelial Malignant Transformation in the Large Intestine and It＇s Significance in Cancerous Apoptotic Evasion

Objective To explore the molecular mechanism of Fas counterattack by observing the expression of Fas and FasL and apoptosis of the epithelium and infiltrative lymphocytes at different stages of intestinal epithelia malignant transformations and further to analyze the relationships among these processes.