Uberon definition : The outermost layer of trophoblast, produced by cytotrophoblast where there is direct
contact with maternal decidua rather than blood. The EVT cells travel into the decidua,
reacting with NK cells and invading maternal blood vessels feeding the placenta, softening
the walls and replacing the lining with fetal tissue, a process called conversion.;
The outermost layer of trophoblast, produced by cytotrophoblast where there is direct
contact with maternal decidua rather than blood. The EVT cells travel into the decidua,
reacting with NK cells and invading maternal blood vessels feeding the placenta, softening
the walls and replacing the lining with fetal tissue, a process called conversion.