Assertion: chorion | /r/MadeOf | extraembryonic mesoderm
Facets:
Source sentences:
text: It is formed by extraembryonic mesoderm and the two layers of trophoblast and surrounds the embryo and other membranes.
text: The chorion is a double-layered membrane formed by the trophoblast and the extra-embryonic mesoderm, which eventually will give rise to the fetal part of the placenta.
text: It is formed by extraembryonic mesoderm and the two layers of trophoblast and surrounds the embryo and other membranes.