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Related to antigenic mimicry: Antigenic variation
antigenic mimicry[′an·tə¦jen·ik ′mim·ə·krē]
Acquisition or production of host antigens by a parasite, enabling it to avoid detection by the host's immune system.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.