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Definition of Xenoantigen

Xenoantigen: An antigen that is found in more than one species. An antigen is something that is capable of inducing an immune response.

The prefix "xeno-" means foreign or other. It comes from the Greek "xenos" meaning stranger, guest, or host.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=10738
Last Editorial Review: 6/14/2012

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