You may worry about your baby if you find out that you have placenta previa. You are likely to be in your second trimester if you are diagnosed with it. The good thing is that this condition is only ...

Recognition of three basic placenta types by Otto Grosser over a century ago has proven its worth: non-invasive, moderately invasive or highly invasive. In contrast to the invasive types, no breakdown ...

In any placental mammal a finely tuned immune system protects its body against invasion. Detection of foreign proteins triggers rejection. Yet half the genes of a fetus in the mother’s womb stem from ...