MedlinePlus Medical Encyclopedia: Immune system structures

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Immune system structures

The immune system protects the body from potentially harmful substances. The inflammatory response (inflammation) is part of innate immunity. It occurs when tissues are injured by bacteria, trauma, toxins, heat, or any other cause.

Update Date: 11/6/2006

Updated by: Sandra W. Cohen, M.D. Private Practice specializing in geriatrics, Brooklyn, NY. Review provided by VeriMed Healthcare Network.

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