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Sagittal sections of a 16-week human female fetal reproductive tract immunostained with PAX2 (A–B) and FOXA1 (C–D). FOXA1-reactive epithelial cells form all of the solid vaginal plate (C–D). PAX2-reactive epithelial cells constitute a stratified epithelium lining the lumen of the uterovaginal canal (A–B). Scale bar in A also refers to D. Scale bar in D also refers to C.
