Immunology of Pregnancy

Pregnancy is a unique symbiotic union between mother and fetus which contradicts many of the general rules of immunology. The maternal immune system reacts towards the foreign tissue, but instead of triggering rejection, it tolerates, supports and regulates its development. The immunological mechanisms allowing the fetus to grow and survive are complex and may be affected by internal and external factors which may result in pregnancy disorders including infertility, abortions and preeclamptic di