Maternal–fetal interactions, predictive markers for preeclampsia, and programming

During pregnancy in the human, fetal cells come into direct contact with maternal cells and tissues. This close contact brings together cells of two genetically different individuals. While this type of contact is typically associated with rejection processes, during normal pregnancy there is neither harm to the mother nor rejection of the baby.
Source: Journal of Reproductive Immunology - Category: Allergy & Immunology Authors: Source Type: research