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Does cell fusion count as plasticity?

CELL Fusion plasticity
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Does cell fusion count as plasticity?

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The discovery that adult stem cells can merge with embryonic stem cells in vitro has led some investigators to hold that stem cell plasticity is a random fusion phenomenon.6 But as Helen Blau7 writes in a recent commentary in Nature, rather than seeing fusion as merely an unimportant, random occurrence, it may represent the mechanism whereby nomadic stem cells initiate differentiation and repair in damaged tissues.

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