Figure 2.

Immunoperoxidase staining for Phospho-STAT3 (Ser727). a) Transversal cut of uterus on day 8, immunoreaction is strong in the cytoplasm of decidual and predecidual cell. b) This reaction continues on day 9, however immunoreaction for Serine STAT3 was not observed in the giant trophoblast cells (asterisk); arrow shows the immunoreaction in the epithelium of the new light. c) Mesometrial deciduas on day 11, show immunoreaction in this cells and surrounding the maternal blood vessels (mBV). d) In this day observe the immunoreaction in the cytoplasm of the giant trophoblast cells (asterisk). e) Spongiotrophoblast region on day 12, show immunoreaction. (f): This reaction increase on days 13 and 14. g, h, i) Representative negative control of immunohistochemistry. AD, antimesometrial deciduas; S, spongiotrophoblast region. Scale bar: 100 µm.