Fig. 1

Proportions of chemokine receptor expressing memory Th cells differ between ACPA⁺ and ACPA⁻ RA patients. a Fraction of CD4⁺ T cell population within the total lymphocyte population of 27 ACPA⁺ and 27 ACPA⁻ patients with RA. b Fraction of memory CD4⁺ T cell population within the total CD4⁺ T cell population of 27 ACPA⁺ and 27 ACPA⁻ patients with RA. c Chemokine receptor and CD161 expression on peripheral blood memory (CD45RO⁺) CD4⁺CD25⁻ T cells from matched ACPA⁺ and ACPA⁻ patients with RA, measured by flow cytometry. For statistical analysis Wilcoxon matched-pairs signed-ranks test was performed (* = p < 0.05).