CD3

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CD3

a type I transmembrane protein found on T cells that forms the signal transduction unit for the T cell; expressed in patients with T-cell lymphomas.
Farlex Partner Medical Dictionary © Farlex 2012

CD3

T3 A complex of 5 invariable polypeptide chains, which are part of a larger complex that includes the T cell receptor; CD3 is 'pan-T' cell antigen–ie, present on most mature T cells–60-85% of peripheral T cells, 20-85% of thymocytes. See Pan-T cell markers.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.