alloantigen(redirected from canine secretory alloantigen system (CSA))
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An antigen that occurs in some but not all members of the same species. Used by the immune system to distinguish self from nonself.
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The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
alloantigenAn antigen that occurs in some members of a species, which in humans is determined in part by the major histocompatibility complex.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
An antigen that occurs in some, but not in other members of the same species. The term isoantigen is sometimes used in this sense.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012