Blastocyst refers to the hollow ball of embryonic cells that enters the uterus from the Fallopian tube and eventually implants. It is a stage within the germinal period of pre-natal development in which the zygote has the form of a sphere of cells surrounding a cavity of fluid.

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Implantation at psychology-glossary.com■■■■■
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Ovum at psychology-glossary.com■■■■
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Period of the zygote at psychology-glossary.com■■■■
Period of the zygote refers to the first phase of prenatal development that lasts from conception until . . . Read More
Zygote Intra-Fallopian Tube Transfer (ZIFT) at psychology-glossary.com■■■
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