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Science 17 August 2007:
Vol. 317. no. 5840, pp. 884 - 885
DOI: 10.1126/science.317.5840.884b
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News of the Week

MOLECULAR EVOLUTION:
Resurrected Proteins Reveal Their Surprising History

Robert F. Service

In a paper published online in Science this week (www.sciencemag.org/cgi/content/abstract/1142819), researchers report that they resurrected a protein from ancient fish that swam the oceans some 450 million years ago and retraced the steps by which two proteins diverged from their ancient common ancestor.

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