Isotypes of Epstein-Barr Virus Antibodies in Rheumatoid Arthritis: Association with Rheumatoid Factors and Citrulline-Dependent Antibodies

Figure 3

Scattergrams showing CCP antibodies from RA patients divided into IgA or IgM RF positives and negatives. (a) CCP antibodies divided into IgA RF states, IgA RF positives () and IgA RF negatives (). (b) CCP antibodies divided into IgM RF states, IgM RF positives () and IgM RF negatives (). RA patients total (). The RF positives and negatives were compared using the Mann-Whitney test. Data are presented as mean ± SEM. Concentrations of antibodies are presented in arbitrary units. Statistical significant differences are indicated with , , , or for values less than 0.05, 0.01, 0.001, or 0.0001, respectively.

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