Term
Trophectoderm
What Is
Trophectoderm?
The trophectoderm is a layer of cells on the outer edge of a blastocyst. These cells provide nutrients for the developing embryo, facilitate implantation into the uterine lining and become part of the placenta.
The trophectoderm begins to form around the 5th day after an egg is fertilized, at the same time as the rest of the blastocyst.
The trophectoderm can also be called the trophoblast or T cells.
