• Immune system structures

    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: 12/13/2011

    Updated by: Michael Langan, M.D. Department of Geriatrics, Massachusetts General Hospital, Boston, MA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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