The PCNA expression of the endometrial smear was tested by immunohistochemistry.The expression of PCNA tested by the endometrium sectioning method was compared with the two methods mentioned above.

• 比较两种方法所反映的性激素对子宫内膜PCNA的影响与传统的内膜组织免疫组化法所反映的性激素对子宫内膜PCNA的影响是否一致。