Dictionary.com
definitions

autoantigen

[aw-toh-an-ti-juh n, -jen]
noun Immunology.
  1. an antigen of one's own cells or cell products.

Origin of autoantigen

auto-1 + antigen
Also called self-antigen.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
autoantigen in Medicine

autoantigen

[ô′tō-ăn′tĭ-jən]
n.
  1. An endogenous antigen that stimulates the production of autoantibodies.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.