<unk>  is known to have a role of transportation in antibody feedback regulation. Antigens which enter the blood stream can be captured by antigen specific IgE antibodies. The IgE immune complexes that are formed bind to<unk>  molecules on B cells, and are transported to the B cell follicles of the spleen. The antigen is then transferred from<unk> + B cells to CD11c+ antigen presenting cells. The CD11c+ cells in turn present the antigen to CD4+ T cells, which can lead to an enhanced antibody response.
CD23
CD74
CD80
CD22
CD137
CD86
IL-2 receptor
CD44