Design: Endometrium of the normal proliferative phase, secretory phase and postmenopause with or without HRT were chosen to observe the morphology and to detect the PCNA index.

• 方法:选择正常增殖期、分泌期、绝经后的子宫内膜及接受激素替代治疗(HRT)后的子宫内膜,根据病理诊断分为增殖期与分泌期,分别检测其中的PCNA水平。