Related Experiment Video
Updated: Jun 5, 2026

Isolation of Leukocytes from the Murine Tissues at the Maternal-Fetal Interface
Published on: May 21, 2015
Review: Fetal antigens--identity, origins, and influences on the maternal immune system
1Department of Anatomy & Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA. mpetroff@kumc.edu
Pregnancy induces priming of the maternal cellular and humoral immune systems. The paternally-inherited fetal antigens that influence maternal T and B cells include both major and minor histocompatibility antigens - the same antigens that are problematic in allotransplantation. Animal models have facilitated our understanding of the lymphocyte responses to fetal antigens, and our appreciation of the parallel response in pregnant women is increasing. The physiologic properties of the placenta as well as trafficking of cells between mother and fetus allow ample opportunity for sampling of fetal proteins by the maternal immune system. Here, the current state of knowledge of fetal antigen-specific lymphocyte responses in pregnancy is reviewed.
Pregnancy induces priming of the maternal cellular and humoral immune systems. The paternally-inherited fetal antigens that influence maternal T and B cells include both major and minor histocompatibility antigens - the same antigens that are problematic in allotransplantation. Animal models have facilitated our understanding of the lymphocyte responses to fetal antigens, and our appreciation of the parallel response in pregnant women is increasing. The physiologic properties of the placenta as well as trafficking of cells between mother and fetus allow ample opportunity for sampling of fetal proteins by the maternal immune system. Here, the current state of knowledge of fetal antigen-specific lymphocyte responses in pregnancy is reviewed.
Related Concept Videos
Development of Immunocompetence
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
Transcytosis of IgG
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
Rh Blood Group
Antigens Involved in Adaptive Immunity
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Development of the Oral Microbiota
Special Features of Adaptive Immunity
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
