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 Scripps research scientists unlock evolutionary secret of blood vessels |
Thursday, 23 February 2012
 La Jolla CA (SPX) Feb 23, 2012
The ability to form closed systems of blood vessels is one of the hallmarks of vertebrate development. Without it, humans would be closer to invertebrates (think mollusks) in design, where blood simply washes through an open system to nourish internal organs. But vertebrates evolved closed circulation systems designed to more effectively carry blood to organs and tissues. Precisely how tha
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