The most critical need after a traumatic injury is to stop bleeding that occurs, and the body's immediate response is to form blood clots. Researchers at the Georgia Institute of Technology and Emory University say the chemical signals from those initial clots may control subsequent healing. They have used that information to develop artificial blood platelets that in animal studies have reduced clotting time by one third. The synthetic platelets, which have yet to be tested in humans, are ...
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