Answer:
streptokinase
Step-by-step explanation:
Streptokinase is an enzyme which is used in medication to dissolve the blood clot formed in the blood vessels of heart, lungs, legs etc.
It is a form of fibrinolytic drugs that is capable of breaking the cross-links between fibrin molecules which are responsible for giving structural integrity of blood clots.
It is generally recommended for patient who have faced heart attack.
Hence , streptokinase is the right answer