Figure 1. Sigma-1 Receptor Expression in Ovary Tissue. Ovarian cortex in women of childbearing age (A, ×200) (C, ×400) showed intense immunostaining. Intense immunostaining was observed inovarian granulosa cells and theca cells of growing follicle (B, ×400). Granulosa cells of mature follicle also showed intense staining (D, ×200). Low immunostaining was observed in human ovarian stromal cells (E, ×400).