antigen
an·ti·gen
noun
1.
any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)
Origin
From French antigène, from anti- + gène.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.