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(a–c) Immunofluorescent staining of follicular vasculature of class 5b follicles on experimental day 1. (a) C, control group follicle; (b) S, PMSG-stimulated follicle; (c) T, treatment group follicle. Insert in b shows proliferating endothelial cells (arrow). Green: PECAM staining for blood vessels; red: BrdU staining for cell proliferation; yellow: combined staining indication of blood vessel proliferation.
