title: Serum and synovial fluid Ig, C3 and CRP levels in rheumatoid arthritis.
mesh_terms: D001168:Arthritis / Q000276:immunology; D001172:Arthritis, Rheumatoid / Q000276:immunology*; D002097:C-Reactive Protein / Q000032:analysis*; D003176:Complement C3 / Q000032:analysis*; D005260:Female; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis*; D008297:Male; D013582:Synovial Fluid / Q000276:immunology*
chemical_list: D003176:Complement C3; D007136:Immunoglobulins; D002097:C-Reactive Protein