Maternal Foxp3 Expressing CD4+ CD25+ and CD4+ CD25− Regulatory T-Cell Populations are Enriched in Human Early Normal Pregnancy Decidua: A Phenotypic Study of Paired Decidual and Peripheral Blood Samples

PROBLEM: Regulatory T cells (Treg cells), a small subset of CD4(+) T cells maintaining tolerance by immunosuppression, are proposed contributors to the survival of the fetal semiallograft. We inves ...