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Receptors igg

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receptors, IgG

specific molecular sites on the surface of various cells, including b-lymphocytes and macrophages, that combine with iggs. Three subclasses exist: fc gamma ri (the CD64 antigen, a low affinity receptor), fc gamma rii (the CD32 antigen, a high affinity receptor), and fc gamma riii (the CD16 antigen, a low affinity receptor).