Which of the following can be used as a clot buster for removing clots from blood vessels?    

Streptokinase is produced by the bacterium Streptococcus and is modified using genetic engineering techniques. It is used as a "clot buster" in patients who have suffered from a myocardial infarction (heart attack). Streptokinase helps dissolve blood clots in the blood vessels, restoring blood flow and preventing further damage to the heart muscle.