Maternal Krüppel-like factor 2 (KLF2)+ CD4 T cells promote fertility and fetal tolerance

Proceedings of the National Academy of Sciences, Volume 123, Issue 13, March 2026. <br/>SignificancePregnancy is remarkable in that mothers tolerate the developing fetus expressing immunologically foreign paternal antigens. These foreign antigens stimulate rejection in other contexts, such as organ transplantation. Investigating how fetal …