Fig. 1From: Concentration of antibodies against Porphyromonas gingivalis is increased before the onset of symptoms of rheumatoid arthritisConcentrations of anti-RgpB (a) and anti-CPP3 (b) antibodies in controls, pre-symptomatic individuals and patients with RA. Mean concentrations marked as a grey line. ***p < 0.001. n.s not significantBack to article page