Light photomicrographs of human healthy endometrium, endometrial hyperplasia and endometrial cancer tissue. Expression of Müllerian inhibiting substance/anti-Müllerian hormone type II receptor in the cell membrane. (A) Proliferative human healthy endometrium. (B) Secretory human healthy endometrium. (C) Simple endometrial hyperplasia without atypia. (D) Complex endometrial hyperplasia without atypia. (E) Simple endometrial hyperplasia with atypia. (F) Complex hyperplasia with atypia. (G) Endometrial cancer (H) Endometrial cancer. In each panel, the right main image is at magnification, ×200, and the lower boxed area is at magnification, ×400.