The Vampire Bat: Nature's Own Clot Buster?

The vampire bat's sinister reputation could soon change, as scientists at Merck Sharp & Dohme study ways to use a clot-dissolving molecule in its saliva to treat heart disease. Vampire bats depend on a diet of fresh blood. To make sure they get a full meal from their victims, they release a plasminogen-activator called Bat-PA that prevents blood from clotting and closing the open wound.

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