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PAX2 (A–E) and FOXA1 (F) immunostaining of human female fetal reproductive tracts at the ages indicated. PAX2 is expressed in the Müllerian duct and uterovaginal canal at 9 weeks (A–B), and in epithelium of the uterine tube, uterus and cervix (C–E). FOXA1 is expressed only in UGE derivatives (urethra and bladder) (F).
