the autoantibody profile results from 750 randomly selected patients with rheumatoid factor ( rf ) and/or antinuclear antibody ( ana ) positive tests were retrospectively analysed in order to discover if there was any evidence to show that the presence of polyclonal rheumatoid factors affects the incidence and titre of igg-ana in these patients .
C0004358
autoantibody
C0035448
rheumatoid factor