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. 2016 Dec 15;97(12):3302–3312. doi: 10.1099/jgv.0.000621

Fig. 1.

Fig. 1.

Amount of IL-6 in the plasma of parvovirus B19 DNA positive (B19+) and parvovirus B19 DNA negative (B19−) persons. IL-6 in the plasma of rheumatoid arthritis (RA) patients and healthy age-matched persons (control) (a). IL-6 in the plasma of RA patients, divided according to the localization of virus DNA (b). RA patients are divided into the groups according to the findings of virus DNA (in blood, in cell-free blood plasma and in both blood and cell-free plasma) and DAS28<5.2 and DAS28>5.2 (c); HgB lower than normal and HgB normal (d); normal values of CRP and CRP high (e) and patients with and without immunotherapy (f). One symbol shows the amount of IL-6 (pg ml−1) of one person. Results are significant according to Mann–Whitney U test: *P<0.05, **P<0.005 or ***P<0.0005.