[al-oh-an-ti-juh n, -jen]
an antigen present in some but not all individuals of the same species, as those in different human blood groups.
Origin of alloantigen
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.