CRP and rheumatoid arthritis: In RA patients, mDC counts were inversely correlated with each of these markers (P < 0.05, r2 = 0.07, P < 0.02, r2 = 0.11 and P < 0.05, r2 = 0.11, respectively, for DAS28, Health Assessment Questionnaire score and C-reactive protein level).