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Antioxidant activity of follicular fluid (FF) determined using β-Carotene bleaching assay. TO, tubal occlusion; PCOS, polycystic ovary syndrome; EMT, endometriosis; DPPH, α,α-diphenyl-β-picrylhydrazyl; Vc, ascorbic acid; GA, gallic acid; BHT, butylated hydroxytoluene.
