News of the WeekDevelopmental Biology

Purified Signaling Protein Stimulates Stem Cell Proliferation

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Science  02 May 2003:
Vol. 300, Issue 5620, pp. 722
DOI: 10.1126/science.300.5620.722

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After decades of painstaking and often fruitless effort, a team of scientists has purified a versatile protein that stars in multiple cell dramas, from embryonic development to cancer. The protein, called Wnt, turns out to have yet another role: making stem cells multiply.