Figure 2From: Effect of bee venom on IL-6, COX-2 and VEGF levels in polycystic ovarian syndrome induced in Wistar rats by estradiol valerateExpression of COX-2 in primary and secondary follicles. (A) normal ovary; (B) strict expression of COX-2 is observable in these follicles in PCOS group; (C) COX-2 expression is restricted to blood vessels and ovary stroma (filled arrow) in HBV group. Magnification 100 × .Back to article page