The change of α-actin filament was examined by immunocytochemistry.

方法POP患者(POP组)20例及无POP的直肠癌患者(对照组)30例行盆底肌活检,光镜及电子显微镜观察盆底肌形态,免疫组织化学检测肌细胞内α-肌动蛋白的表达。