| http://www.w3.org/ns/prov#value | - In accordance with this embodiment, the invention relates to an isolated placenta which contains a cell not derived from the placenta, wherein the engraftment of said cell into the placenta may stimulate the placenta to produce embryonic-like stem cells, or wherein the engrafted cell produces signals, such as cytokines and growth factors, which may stimulate the placenta to produce stem cells.
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