Expression of VEGF in infolded layers and follicular liquid of Graafian follicles and cysts. (A) VEGF is highly expressed in theca layer of ovaries, whereas, this high expression is not seen in granulosa layer of antral follicles in control group. (B) High expression of VEGF is observable in granulosa and theca layers in PCOS group. (C) VEGF is just expressed in theca layer, especially in blood vessels of venom-treated ovaries. Arrows depict the predominant location of VEGF in theca layer. Magnification 100 × .