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Nature Cell Biology 11, 118 - 120 (2009)
doi:10.1038/ncb0209-118

Casting back to stem cells

Shosei Yoshida1

  1. Shosei Yoshida is in the Division of Germ Cell Biology, National Institute for Basic Biology, 444-8989, Okazaki, Japan.
    e-mail: shosei@nibb.ac.jp


In the classical view, adult stem cells and their differentiating progeny are considered to be distinct entities in an irreversible sequence of development. However, emerging evidence suggests that this distinction may not be so definitive. Recent work in the mouse shows that a population of differentiating spermatogonia, when transplanted, can 'de-differentiate' into functional self-renewing stem cells.

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