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n. Abbr. IgD
1. The class of antibodies that are found chiefly on the surface of B cells and are thought to function in B cell activation.
2. An antibody of this class.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||immunoglobulin D - one of the five major classes of immunoglobulins; present in blood serum in small amounts|
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