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. 2019 May 26;8(5):751. doi: 10.3390/jcm8050751

Figure 2.

Figure 2

Correlation between clinical and biological parameters at baseline. Correlations between RF IgA and DAS28 (A); anti-CCP2 and anti-P. gingivalis whole extract antibodies (B); anti-CCP2 and anti-P. gingivalis LPS specific antibodies (C); and RF IgG and anti-P. intermedia antibodies (D). RF: rheumatoid factors; IU: international units; DAS28: disease activity score 28; AU: arbitrary units; anti-CCP2: anti-cyclic citrullinated petides 2nd generation; r: Spearman correlation coefficient; LPS: lipopolysaccharide; U: Unit; IU: International unit; NS: non-significant.