title: International reference preparation for human serum IgG, IgA, IgM.
mesh_terms: D006801:Humans; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007158:Immunologic Techniques / Q000592:standards*; D007391:International Cooperation
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M