Review Article

The Role and Function of Regulatory T Cells in Toxoplasma gondii-Induced Adverse Pregnancy Outcomes

Figure 2

Mechanism of maternal-fetal immune regulation. The maternal-fetal interface is composed of CTBs and SYN, formed by the fusion of underlying CTBs. SYN, the key interface between the blood and fetal barrier, is highly resistant to T. gondii. T. gondii rarely goes across SYN. T. gondii infection affects maternal-fetal immune regulation by affecting maternal regulatory immune cells, mainly by inhibiting Tregs. CTBs: cytotrophoblasts; SYN, syncytiotrophoblasts; EVTs: extravillous trophoblasts; Teff cell: effector T; tDC: tolerance-inducing DC; images were created with BioRender.