title: Immunoglobulin class of influenza antibodies investigated by radioimmunoassay (RIA).
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis*; D002499:Centrifugation, Density Gradient; D003168:Complement Fixation Tests; D006386:Hemagglutination Tests; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis*; D007456:Iodine Isotopes; D009975:Orthomyxoviridae / Q000276:immunology*; D011863:Radioimmunoassay
chemical_list: D000914:Antibodies, Viral; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins; D007456:Iodine Isotopes