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Which protein causes blood to clot?

fibrinogen

fibrin

myosin

pepsin

In order to reduce the loss of blood and facilitate the recovery of the blood vessel at the site of the injury, a blood clot is formed. It is made up of platelets and dissolved plasma protein-fibrogen. By the substance released by the blood-thrombin plate, fibrogen changes into fibrin, which creates a dense network at the site of injury.

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