CD32 is a receptor for the Fc region of complexed or aggregated immunoglobulins gamma. This is a low affinity receptor. It is Involved in a variety of effector and regulatory functions such as phagocytosis of immune complexes and modulation of antibody production by B-cells. Binding to this receptor results in downmodulation of previous state of cell activation triggered via antigen receptors on B cells (BCR), T cells (TCR) or via another Fc receptor.