Fig. 3From: Concentration of antibodies against Porphyromonas gingivalis is increased before the onset of symptoms of rheumatoid arthritisPie charts illustrating the different sub-groups of pre-symptomatic individuals (one sample per individual, n = 251) (a) and RA patients (n = 188) (b), based on the presence/absence of anti-CCP2 and anti-CPP3 antibodies. Data presented as percentageBack to article page