Why do streptococci secrete streptokinase?

What is the difference between hemostasis and thrombosis?

Given what you know about hemostasis and thrombosis, why did researchers have to check that thrombolytic drugs didn’t cause systemic bleeding?

Why doesn’t rt-PA arouse suspicion of the immune system?

What is angioplasty?

Why is the medical decision to give a patient a thrombolytic drug more complicated in the case of a stroke than a heart attack? What are surfactants and how do surfactants do they decrease the work of breathing (reference LaPlace’s Law and how surface tension is different in large vs. small alveoli in your answer ?