Figure 7.

ERα and PR immunostaining pattern in the baboon Papio hamadryas oviductal fimbriae during the menstrual cycle. (A–C), ERα was present only in the nuclei. (D–F), PR immunoreactivity was observed unevenly in the cytoplasm and nucleus of epithelial cells during the follicular and luteal phases, whereas it was present in the nuclei of the nonciliated cells and in the cilia during the preovulatory phase. The inset images display the absence of immunoreactivity in negative controls. cc, ciliated cell; e, epithelium; lp, lamina propria; nc, nonciliated cell; arrowhead, cilia; asterisk, negative nucleus. Scale bar: 10 µm.