Figure 3. Percentage of immunohistochemically positively stained nuclei of endometrial glandular epithelial cells for estrogen (ER) and progesterone (PR) receptors, and Ki-67 for immunohistological days 16-24 in natural cycles and hormone replacement therapy (HRT) cycles. A: ER and PR expression in natural cycles. B: ER and PR expression in HRT cycles. C: Ki-67 expression in natural cycles. (D) Ki-67 expression in HRT cycles.
