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nonself-antigen

American  
[non-self-an-ti-juhn, -jen] / nɒnˈsɛlfˌæn tɪ dʒən, -ˌdʒɛn /
Or nonself antigen

noun

Immunology.

  1. any of the antigens present in an individual that originate outside the body (self-antigen ).

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.