Question
Implantation begins with apposition of the ____ at the uterine epithelium, generally about 2-4 days after the morula enters the uterine cavity.
Answer
Implantation begins with apposition of the blastocyst at the uterine epithelium, generally about 2-4 days after the morula enters the uterine cavity.
During apposition process, the blastocyst differentiates into an inner cell mass (embryo) and trophectoderm (placenta)
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