title: Infection with E.B. virus and rheumatoid arthritis.
mesh_terms: D000368:Aged; D000914:Antibodies, Viral / Q000302:isolation & purification; D000956:Antigens, Viral / Q000276:immunology; D001172:Arthritis, Rheumatoid / Q000209:etiology* / Q000276:immunology; D002213:Capsid / Q000276:immunology; D004854:Herpesvirus 4, Human / Q000276:immunology*; D006801:Humans; D008875:Middle Aged
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral