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NATURE | Crash: A Tale of Two Species | Blue Blood | PBS

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Uploaded on Feb 4, 2008

See the full episode at http://video.pbs.org/video/1200406235
Horseshoe crabs' blue blood, which contains copper, not iron, is prized by the biomedical community for its ability to detect bacteria in human medicines. It's just one of the amazing qualities of the 350-million-year-old evolutionary marvel detailed in "Crash: A Tale of Two Species."

"Crash: A Tale of Two Species" aired on PBS Sunday, March 20, 2011 at 8pm as part of the 28th season of the Peabody and Emmy award-winning series produced by Thirteen in association with WNET.ORG for PBS. Major support provided by Canon U.S.A. Inc. http://www.pbs.org/wnet/nature/episod...

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