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Science 1 August 2008:
Vol. 321. no. 5889, p. 623
DOI: 10.1126/science.321.5889.623a
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News of the Week

PALEONTOLOGY:
Is Dinosaur 'Soft Tissue' Really Slime?

Carl Zimmer

This week, scientists challenged a 2005 report of intact blood vessels from a Tyrannosaurus rex fossil, arguing that the dinosaur flesh was in fact just coatings of young bacteria. But the original researchers stand by their results, calling the new argument weak.

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