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. 2022 Apr 27;13:884275. doi: 10.3389/fgene.2022.884275

FIGURE 2.

FIGURE 2

HLA molecules in preeclampsia. HLA-G levels are decreased in preeclampsia which evidence suggest result in defects in tolerance induction and spiral artery remodeling. Though disputed by some studies, most studies suggest that HLA-C engaging inhibitory KIR receptors on NK cells (such as KIR2DL1) also leads to defects in spiral artery remodeling as failed NK cell release of pro-migratory chemokines and cytokines limits EVT invasion. The roles of HLA-E and HLA-F in preeclampsia need to be investigated further.