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alloantigen

American

[al-oh-an-ti-juhn, -jen] / ˌæl oʊˈæn tɪ dʒən, -ˌdʒɛn /

noun

Immunology.

an antigen present in some but not all individuals of the same species, as those in different human blood groups.

First recorded in 1965–70; allo- + antigen

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