title: Inhibition of complement fixation by rheumatoid sera.
mesh_terms: D000937:Antigen-Antibody Reactions; D002845:Chromatography; D003165:Complement System Proteins; D006801:Humans; D066298:In Vitro Techniques; D012217:Rheumatoid Factor; D005719:gamma-Globulins
chemical_list: D005719:gamma-Globulins; D003165:Complement System Proteins; D012217:Rheumatoid Factor