Figure 4From: Validation of a multiplex chip-based assay for the detection of autoantibodies against citrullinated peptidesHistograms showing the relative frequency of subjects as a function of number of peptide reactivities against the 12 investigated citrullinated peptides for (a) all RA patients, (b) CCP-positive RA patients, (c) CCP-negative RA patients, and (d) healthy controls.Back to article page