title: Studies on the first component of complement (C1) and the inhibitor of C1 esterase in rheumatoid synovial fluids.
mesh_terms: D000372:Agglutination Tests; D000936:Antigen-Antibody Complex; D001172:Arthritis, Rheumatoid / Q000276:immunology*; D002499:Centrifugation, Density Gradient; D003169:Complement Inactivator Proteins; D003165:Complement System Proteins / Q000032:analysis*; D004589:Electrophoresis, Disc; D004950:Esterases / Q000037:antagonists & inhibitors*; D006801:Humans; D005779:Immunodiffusion; D007456:Iodine Isotopes; D012217:Rheumatoid Factor / Q000032:analysis; D013582:Synovial Fluid / Q000276:immunology*; D014461:Ultracentrifugation
chemical_list: D000936:Antigen-Antibody Complex; D003169:Complement Inactivator Proteins; D007456:Iodine Isotopes; D003165:Complement System Proteins; D012217:Rheumatoid Factor; D004950:Esterases