Figure 1

Immunohistochemistry of ER-alpha in normal cycling women from the proliferative with inset showing luminal epithelium (A), early secretory (B) and mid-secretory (C) endometrium. Other samples from the mid-secretory endometrium from women with endometriosis shows increased and inappropriate expression of the ER-alpha protein in glandular and stromal compartments (D and E) compared to normal mid-secretory endometrium (C). Bar = 50 μm.