nonself-antigen

American

[non-self-an-ti-juhn, -jen] / nɒnˈsɛlfˌæn tɪ dʒən, -ˌdʒɛn /

Or nonself antigen

noun

Immunology.

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

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