[Studies on the rheumatoid factor in the aged].
D000368:Aged; D000917:Antibody Formation; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis; D012216:Rheumatic Diseases / Q000276:immunology; D012217:Rheumatoid Factor / Q000032:analysis*
D007136:Immunoglobulins; D012217:Rheumatoid Factor
Studi sul fattore reumatoide nel vecchio.