- Higher proportion in peripheral blood in preeclampsia compared to healthy controls (32)- Higher proportion of RTE Treg cells in peripheral blood in preeclampsia differentiate into CD31+ Treg memory cells (38).- CD31+ Treg memory cells in peripheral blood in preeclampsia have decreased immune suppressive capacity compared to CD31+ memory Treg cells in healthy women (38).- HLA-DR− memory Treg cells were increased in gestational diabetes with dietary adjustment (41)- HLA-DR− memory Treg cells were strongly increased in gestational diabetes with insulin therapy (41). Here, PECAM1 is linked to preeclampsia.