Definition of Immune system
Immune system: A complex system that is responsible for distinguishing a person from everything foreign to him or her and for protecting his or her body against infections and foreign substances.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=3907
Last Editorial Review: 3/19/2012
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Allergies & Asthma
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