Assertion: embryo's stem cell | /r/HasProperty | stem cells
Facets:
Source sentences:
text: Embryonic stem cells (often referred to as ES cells) are stem cells that are derived from the inner cell mass of a mammalian embryo at a very early stage of development, when it is composed of a hollow sphere of dividing cells (a blastocyst).
text: Embryonic stem cells (ES cells) are stem cells taken from the inner cell mass of the early stage embryo known as a blastocyst.
text: Embryonic stem cells (ES cells) are stem cells taken from the inner cell mass of the early stage embryo known as a blastocyst.