title: Response to paper by Williamson et al: The purification of IgG autoantibodies.
mesh_terms: D001323:Autoantibodies / Q000032:analysis*; D003095:Collagen Diseases / Q000276:immunology*; D006801:Humans; D012261:Ribonucleoproteins / Q000276:immunology*
chemical_list: D001323:Autoantibodies; D012261:Ribonucleoproteins