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KRT6 immunostaining in an intact 13-week human fetal reproductive tract (AC122) grown for 4 weeks in a DES-treated ovariectomized female athymic mouse host. The vaginal squamous epithelial cells were highly reactive, while adenosis was not (B). The glandular epithelial cells of the cervix, uterine corpus and uterine tube were non-reactive except for small patches (A, arrowheads).
