Figure 3.

IgA, 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.

Smit et al. Arthritis Research & Therapy 2012 14:R222   doi:10.1186/ar4061
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