Pregnancy’s 100-million-year secret: Inside the placenta’s evolutionary power play

Pregnancy’s 100-million-year secret: Inside the placenta’s evolutionary power play

A group of scientists studying pregnancy across six different mammals—from humans to marsupials—uncovered how certain cells at the mother-baby boundary have been working together for over 100 million years. By mapping gene activity in these cells, they found that pregnancy isn’t just a battle between mother and fetus, but often a carefully coordinated partnership. These ancient cell interactions, including hormone production and nutrient sharing…