When too many blood platelets stick together in the bloodstream, they form dangerous clots that can clog blood vessels and cause a heart attack.

If a clot doesn't get dissolved or rapidly removed, it can cause permanent damage or even death. But new research suggests that it should be possible to create a clot-busting pill that targets a receptor on the blood cells' surface, something that high-risk patients could take at the first sign of chest pain.

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