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Science 29 April 2005:
Vol. 308. no. 5722, pp. 624 - 626
DOI: 10.1126/science.308.5722.624
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News Focus

DEVELOPMENTAL BIOLOGY:
Combing Over the Polycomb Group Proteins

Jean Marx

From flies to people, the protein called Polycomb and its partners turn off genes and even an entire chromosome during development. They may also play a role in cancer.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)