FIG. 1.

Schematic view of an anchoring chorionic villus in early pregnancy. The EVT express HLA-C, -E, and -G along the differentiation process from the proliferative phenotype in the cell column (CC) to the invasive phenotype in the basal plate (BP). Abbreviations: CP, chorionic plate; DC, decidual cell; FA, fetal artery; FB, fibroblast; FV, fetal vein; HC, Hofbauer cell (placental macrophage); IVS, intervillous space; LGL: large granular lymphocyte (NK cell); UPA, uteroplacental artery; UPV, uteroplacental vein; vCTB, villous cytotrophoblast; vSTB, villous syncytiotrophoblast.