MedlinePlus Medical Encyclopedia: Antigens

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Antigens

An antigen is a substance that can provoke an immune response. Typically antigens are substances not usually found in the body.

Update Date: 7/19/2007

Updated by: Donald Accetta, MD, MPH, President, Allergy & Asthma Care, PC, Taunton, MA. Review provided by VeriMed Healthcare Network.

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