smartphone blood-clotting test 2 (IMAGE)
Caption
Researchers at the University of Washington have developed a new blood-clotting test that uses only a single drop of blood and a smartphone vibration motor and camera. The system includes a plastic attachment that holds a tiny cup of blood beneath the phone's camera. A person adds blood to the cup, which contains a chemical that starts the blood clotting process and a small copper particle (shown here as the oblong blue shape in the top right of the red circle). Note: This photo simulates how this system works, and the "blood" shown here is not real.
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Mark Stone/University of Washington
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