Figure 3From: Periodontitis in established rheumatoid arthritis patients: a cross-sectional clinical, microbiological and serological studyIgA, IgG, and IgM antibody response against Porphyromonas gingivalis in rheumatoid arthritis (RA) patients and non-RA controls with severe periodontitis as well as in healthy controls (HC). *P < 0.05. Ig, immunoglobulin.Back to article page