Figure 1From: Different properties of ACPA and IgM-RF derived from a large dataset: further evidence of two distinct autoantibody systemsPercentage of rheumatoid arthritis (RA) and non-RA patients with a change in positivity in antibodies to citrullinated proteins/peptides (ACPA) and IgM rheumatoid factor (IgM-RF) between the first and second samples.Back to article page