Archive: https://archive.today/lVHfj From the post: >>Scientists have unveiled a detailed "atlas" of the placenta and uterus, showing how these unique tissues grow and evolve throughout pregnancy to accommodate a developing fetus. In charting this new map, the scientists revealed a subtype of cell that had never been described before and appears to be unique to pregnancy. These cells are not present in the uterus outside pregnancy, and they suddenly rise in number at the start of gestation as the uterine lining morphs to cradle and support the embryo, explained study first author Cheng Wang, a specialist in regeneration medicine specialist at the University of California, San Francisco (UCSF).