What are urokinase and streptokinase used for in vascular pathology?

Biologic stress is MOST accurately defined as:

A) a predictable sequence of physiologic events caused by a stressor. B) the nonspecific response of the body to any demand made upon it. C) stress that most often occurs following a positive event or situation. D) a prolonged and severe discharge of the sympathetic nervous system.

A urine C & S should be performed on a:

A) random urine sample B) clean-catch midstream sample C) routine urine sample D) 24-hour urine specimen