Embryonic stem cells (ESCs) are stem cells derived from the undifferentiated inner mass cells of a human embryo.
Embryonic stem cells are pluripotent, meaning they are able to grow (i.e.
differentiate) into all derivatives of the three primary germ layers: ectoderm, endoderm and mesoderm.
In other words, they can develop into each of the more than 200 cell types of the adult body as long as they are specified to do so..
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