Pus - Definition

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Pus is a thick white or yellow-tinted fluid that can build up then potentially discharge from infected areas. It is composed of a mix of altered white blood cells, dead cell remains, and bacteria. The body's cells usually act in eradicating this fluid, but when pus accumulates in a cavity or enclosed space it can form an abscess and progressively destroy surrounding tissue. Treatment methods consist of draining the pus by way of incision to prevent it from spreading to other tissues, with antibiotics prescribed if necessary.