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Definition Return to top
Antibodies are a type of protein. They are produced by the immune system in response to foreign substances that may be a threat to the body -- such as chemicals, virus particles, spores, or bacterial toxins. (These foreign substances are called antigens.)
Each type of antibody is unique and defends the body against one specific type of antigen.
Update Date: 11/30/2006 Updated by: Donald Accetta, MD, MPH, President, Allergy & Asthma Care, PC, Taunton, MA. Review provided by VeriMed Healthcare Network.
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Page last updated: 25 September 2008 |