The immunolocalization of AR and ERs in the ovary of wild female ground squirrels . The immunolocalization of androgen receptor (a, b, c), ERa (d, e, f) and ERb (g, h, i) in the ovary of wild female ground squirrels during the breeding and nonbreediang seasons. The breeding season divided into two stages, the large follicle stage (a, d, g) and the small follicle (b, e, h). j, negative control. IC, interstitial cell; TC, theca cell; GC, granulosa cell. Bars =50μm.