antigen Hear it!

antigen definition

☆ anti·gen (an′tə jən, -jen′)

noun

a protein, toxin, or other substance of high molecular weight, to which the body reacts by producing antibodies

Etymology: anti- + -gen

Related Forms:

  • antigenic an′ti·gen′ic (-jen′ik) adjective

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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