TeachMeFinance.com - explain Blastocyst
Blastocyst The term 'Blastocyst' as it applies to the area of stem cell research can be defined as 'A preimplantation embryo of about 150 cells produced by cell division following fertilization. The blastocyst is a sphere made up of an outer layer of cells (the trophoblast), a fluid-filled cavity (the blastocoel), and a cluster of cells on the interior (the inner cell mass)'.
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