Displaying items by tag: Blastocyst
Blastocyst Grading Basics
By the blastocyst stage, cells have differentiated into two distinct cell lines. One cell line is the inner cell mass (ICM), and this inner cluster of cells develops into the fetus. The other cell line is the trophectoderm epithelium (TE), and this outer sheet of cells forms the extra-embryonic components which develops into the placenta.
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