immunoglobulin A
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Related to immunoglobulin A: Immunoglobulin A Deficiency, Immunoglobulin A Nephropathy
immunoglobulin A
[‚im·yə·nō‚gläb·yə·lən ′ā] (immunology)
A class of immunoglobulins that inhibits the binding of microorganisms to mucosal surfaces; large amounts are found in breast milk, saliva, and gastrointestinal secretions. Abbreviated IgA.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.