Lymphoid-expressed Fc-gamma receptors Antigen-bound Ig G Antibody Antigen-bound antibody bound to lymphoid Fc gamma receptors Fc gamma receptors interact with antigen-bound IgG Authored: de Bono, B, 2007-07-08 12:58:15 Most cells of the immune system express receptors for the Fc region of IgG. This heterogeneous family of molecules plays a critical role in immunity, by linking the humoral to the cellular responses. NK cells and B cells have been shown to express exclusively Fc-gamma RIIIa and RIIb respectively. Pubmed11955599 Pubmed15081612 Reactome Database ID Release 43199161 Reactome, http://www.reactome.org ReactomeREACT_11087 Reviewed: Trowsdale, J, 2007-08-06 19:33:04