title: Evidence for a common synthetic origin for secretory and serum IgA.
mesh_terms: D000936:Antigen-Antibody Complex; D001172:Arthritis, Rheumatoid / Q000276:immunology; D001323:Autoantibodies; D001666:Binding Sites, Antibody; D002499:Centrifugation, Density Gradient; D002850:Chromatography, Gel; D003488:Cyanogen Bromide; D000939:Epitopes; D004912:Erythrocytes / Q000276:immunology; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007106:Immune Sera; D005779:Immunodiffusion; D007070:Immunoglobulin A / Q000302:isolation & purification*; D007128:Immunoglobulin Fragments / Q000032:analysis; D007074:Immunoglobulin G; D007143:Immunoglobulin Heavy Chains / Q000032:analysis; D007075:Immunoglobulin M; D007145:Immunoglobulin kappa-Chains / Q000032:analysis; D007457:Iodine Radioisotopes; D007525:Isoelectric Focusing; D011485:Protein Binding; D012217:Rheumatoid Factor / Q000032:analysis; D012463:Saliva / Q000276:immunology; D012859:Sjogren's Syndrome / Q000276:immunology / Q000378:metabolism; D014461:Ultracentrifugation
chemical_list: D000936:Antigen-Antibody Complex; D001323:Autoantibodies; D000939:Epitopes; D007106:Immune Sera; D007070:Immunoglobulin A; D007128:Immunoglobulin Fragments; D007074:Immunoglobulin G; D007143:Immunoglobulin Heavy Chains; D007075:Immunoglobulin M; D007145:Immunoglobulin kappa-Chains; D007457:Iodine Radioisotopes; D012217:Rheumatoid Factor; D003488:Cyanogen Bromide