Methods The expression level of ES and microvessel density (MVD) in 10 cases of normal rectal tissues and 40 cases of rectal cancer were detected by immunohistochemistry staining.

• 方法应用免疫组化方法，检测10例正常直肠组织与40例直肠癌组织中ES蛋白的表达以及微血管密度(MVD)。