IN 1949 I published a hypothesis suggesting that the cyto- and syncytio-trophoblast were derived from the granulosa cells that surround the egg when it leaves the ovary; the argument, however ...

The outer membrane (chorion) and trophoblast layer of the placenta are derived from the trophoectoderm of the blastocyst cells. Other extra-embryonic tissues, including the amnion (inner membrane ...

Fredrick Rosario-Joseph and colleagues created a line of mice in which the trophoblast-;the main cell type in the placenta ...