autoantibody

[aw-toh-an-ti-bod-ee, -an-tee-]
noun, plural autoantibodies. Immunology.
an antibody that an organism produces against any of its own tissues, cells, or cell components.

Origin:
1905–10; auto-1 + antibody

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Collins
World English Dictionary
autoantibody (ˌɔːtəʊˈæntɪˌbɒdɪ)
 
n , pl -bodies
an antibody reacting with an antigen that is a part of the organism in which the antibody is formed

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

autoantibody au·to·an·ti·bod·y (ô'tō-ān'tĭ-bŏd'ē)
n.
An antibody that attacks the cells and tissues of the organism in which it was formed.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
autoantibody   (ô'tō-ān'tĭ-bŏd'ē)  Pronunciation Key 
An antibody that reacts with the cells, tissues, or native proteins of the individual in which it is produced. autoimmune diseases are caused by the presence of autoantibodies.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

autoantibody

harmful antibody that attacks components of the body called self antigens. Normally autoantibodies are routinely eliminated by the immune system's self-regulatory process-probably through the neutralization of autoantibody-producing lymphocytes before they mature. At times this process fails, and antibodies that react to self constituents proliferate.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The ultimate cause of the altered levels of autoantibody in anorexics and bulimics is unresolved as yet.
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