title: Studies of the C3 polymorphism. Rlationship between C3 phenotypes and rheumatoid arthritis.
mesh_terms: D000372:Agglutination Tests; D000818:Animals; D001172:Arthritis, Rheumatoid / Q000097:blood / Q000276:immunology*; D003165:Complement System Proteins; D004586:Electrophoresis; D004912:Erythrocytes / Q000276:immunology; D006801:Humans; D010641:Phenotype; D011110:Polymorphism, Genetic; D011134:Polysaccharides; D011817:Rabbits / Q000276:immunology; D012217:Rheumatoid Factor
chemical_list: D011134:Polysaccharides; D003165:Complement System Proteins; D012217:Rheumatoid Factor