title: Negative complement-fixation tests with rheumatoid factor positive sera. A simple method for selective removal of rheumatoid factor.
mesh_terms: D000327:Adsorption; D000914:Antibodies, Viral / Q000032:analysis*; D001172:Arthritis, Rheumatoid / Q000276:immunology*; D003168:Complement Fixation Tests; D006561:Herpes Simplex / Q000276:immunology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007158:Immunologic Techniques; D007616:Kaolin; D008457:Measles / Q000276:immunology; D009107:Mumps / Q000276:immunology; D012217:Rheumatoid Factor / Q000302:isolation & purification; D012409:Rubella / Q000276:immunology
chemical_list: D000914:Antibodies, Viral; D007616:Kaolin; D012217:Rheumatoid Factor