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Your father recently had a heart attack,and has been told by his doctor to take a low dose of aspirin every day to prevent the formation of blood clots that might cause him to have another.The aspirin is being used as a(n) .
Friction
The resistance encountered when one object is moved in contact with another.
Pressure
The force exerted per unit area on the surface of an object, often measured in atmospheres, Pascals, or mmHg.
Callus
Thickened area of skin caused by repeated friction or pressure, or the healing tissue over a bone fracture.
Cyanosis
A bluish or purplish discoloration of the skin and mucous membranes due to insufficient oxygen in the blood.
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