The association between the immune system and reproductive function has long been an attractive target in research. Unfortunately, much of the early work has been misguided leading to premature implementation of therapeutic measures. Thus, a return to the drawing board approach is necessary.

There is renewed interest in foundational research to further our understanding of the immune interaction between the embryo and the endometrium. These studies will likely give new life to research in reproductive immunology. Building upon this foundational work will allow for more artful manipulation of the immune system to improve reproductive outcomes.