title: Nomenclature of the Fc receptors. IUIS subcommittee on nomenclature.
abstract: Fc receptors (FcR) that are specific for particular immunoglobulin isotypes are designated by Greek letters. Subtypes of receptors are denoted by capital Roman numerals, such as: Fc gamma RI, II and III: Fc receptors for IgG on macrophages/monocytes and lymphocytes (numerals are in the order of affinity for IgG); Fc alpha R, Fc mu R and Fc delta R: Fc receptors for IgA, IgM and IgD; Fc epsilon RI: high-affinity receptors for IgE on mast cells and basophils; Fc epsilon RII: low-affinity receptors for IgE on lymphocytes, macrophages, and activated eosinophils. Species are abbreviated as follows: hu (human), mo (mouse), rt (rat), and rb (rabbit). Subunits of receptors are designated by Greek letters alpha, beta, gamma and transcripts by a, b, c, etc. Ig-BF describes the soluble molecules having affinity for immunoglobulin.
mesh_terms: D000486:Allergy and Immunology; D006801:Humans; D011961:Receptors, Fc; D012955:Societies, Medical; D009626:Terminology as Topic
chemical_list: D011961:Receptors, Fc