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. 1999 Apr;154(4):1105–1114. doi: 10.1016/S0002-9440(10)65363-1

Figure 3.

Figure 3.

Expression of cytokeratin (A, E, G) and eNOS (B, C, D, F, H) on placental cytotrophoblast columns/islands at 8 weeks of gestation (A and B, cell island), 11 weeks of gestation (C, cytotrophoblast cell column), 14 weeks of gestation (D, cytotrophoblast cell column), 16 weeks of gestation (E and F, cytotrophoblast cell column), and 19 weeks of gestation (cytotrophoblast cell island, G and H). Cytotrophoblast cell islands are indicated by double arrows and cell columns by single arrows. Cytokeratin staining indicates presence of trophoblasts in syncytiotrophoblast, cell islands, cell columns, and decidua. No eNOS was detected on any of these cells. Scale bar, 200 μm (A and B), 100 μm (C, D, E, F, G, H).