The enzyme that can digest fibrin and dissolve a clot is
A) thrombin.
B) plasmin.
C) heparin.
D) fibrinase.
E) phosphokinase.
B
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The parathyroid glands produce a hormone that
A) stimulates the formation of white blood cells. B) increases the level of calcium ions in the blood. C) increases the level of sodium ions in the blood. D) increases the level of potassium ions in the blood. E) increases the level of glucose in the blood.
Which of the following intensifies the effect of interferons and promotes the rate of repair?
a) Complement proteins b) Perforin c) Fever d) Macrophages e) Natural killer cells
Salmonella is caused by a ________________________________________ infection
Fill in the blank(s) with correct word
Which of the following are derived from the precursor arachidonic acid?
A. Glucocorticoids B. Adrenal medulla hormones C. Thyroid hormones D. Prostaglandins and leukotrienes