April 30, 2009 — It’s official: soft tissue, including blood vessel proteins and structures resembling cells, have been recovered from dinosaur bone. Mary Schweitzer’s amazing claim in 2005 (03/24/2005) was subsequently disputed as possible contamination from biofilms (07/30/2008). Now, Schweitzer and her team took exceptional precautions to avoid contamination by excavating hadrosaur bone from sandstone said to be 80 million years old. A short description of her findings, and a picture of the tissue, was announced today by New Scientist. The paper followed shortly after in the May 1 issue of Science.1 A press release from Schweitzer’s institution, North Carolina State University, says that the preservation of soft tissue in this duck-billed dinosaur fossil was even better than the material from the T. rex bone analyzed in 2005.
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