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09 February 2004

Antibody

A disease-fighting protein in the blood created by the immune system, also known as immunoglobulin. Antibodies coat, mark for immune destruction or render harmless foreign particles like bacteria, viruses or harmful toxins. Antibodies also tag infected cells, making them vulnerable to attack by the immune system. Each antibody attaches itself to a single specific chemical sequence on an antigen. Elements of the body's immune response, these substances circulate in the blood and in other bodily fluids to fight disease-causing microbes.

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A disease-fighting protein in the blood created by the immune system, also known as immunoglobulin. Antibodies coat, mark for immune destruction or render harmless foreign particles like bacteria, viruses or harmful toxins. Antibodies also tag infected cells, making them vulnerable to attack by the immune system. Each antibody attaches itself to a single specific chemical sequence on an antigen. Elements of the body's immune response, these substances circulate in the blood and in other bodily fluids to fight disease-causing microbes.
 
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