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#194382
Thu 07 Nov 2013 03:38:PM
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Joined: Feb 2001
Posts: 381,903
Launch Director
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Launch Director
Joined: Feb 2001
Posts: 381,903 |
A researcher has found through studies of pigs' heart valves that age plays a critical role in the valves' progressive hardening, and the problem may be due to the infiltration of a protein known as von Willebrand factor. Tissues from pig valves are commonly used to make human heart-valve replacements. Source: Clotting protein hardens aging hearts
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