Receptors, IgG

**Definition:** Specific molecular sites on the surface of various cells, including B-lymphocytes and macrophages, that combine with IMMUNOGLOBULIN Gs. 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).

**Tree numbers:** - D12.776.543.750.705.871.300

**Synonyms:** - Fc Receptors, gamma - Fc gamma Receptors - Receptors, Fc gamma - gamma Fc Receptors - Fc Gamma Receptor - IgG Receptor - gamma Fc Receptor - IgG Receptors - Immunoglobulin G Receptor