FCGR1A (Fc fragment of IgG, high affinity Ia, receptor (CD64))
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The Fc fragment of IgG, high affinity la, receptor (FCGR1A) is a leukocyte IgG receptor that is expressed on most myeloid cells. FCGR1A binds IgG with high affinity to help mediate the immune response, although its exact role in immune response cell signaling is not clear. There are 3-4 more copies of FCGR1A in humans than in any other primate, although the significance of this higher copy number is not understood.
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