Figure 8.

Immunohistochemical staining of placenta week 19 (A-C) and week 6 (D-F) with mAb #23 to GAGE. (A) Predominant cytotrophoblast staining (syncytiotrophoblast staining in other areas). (B) Intense immunostaining of Hofbauer cells in villus stroma. (C) Focal immunopositive extravillous trophoblast of basal plate. (D) Immunoreactivity of villous cytotrophoblast and extravillous cytotrophoblast of a cell column. (E) Stromal staining with labeling of endothelial cells (arrow) and focal fibroblasts. (F) Positive fetal hematopoetic cells (arrow) in villous vessel.