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Serum trefoil factor 3 levels in women with polycystic ovary syndrome: a cross-sectional study

Polycystic ovary syndrome (PCOS) is associated with chronic anovulation and prolonged unopposed estrogen exposure, which may contribute to endometrial dysfunction. Trefoil factor 3 (TFF3) is an estrogen-responsive peptide involved in epithelial repair and mucosal integrity. Howev...