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Antibody attacking infected cell, illustration
Computer illustration of an antibody, or immunoglobulin, molecule attacking an infected cell. The y-shaped antibody molecule has two arms that can bind to specific antigens, for instance viral proteins. In doing this they mark the antigen for destruction by phagocytes, white blood cells that ingest and destroy foreign bodies. Antibodies can also kill some pathogens directly and can neutralise toxins.
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