Fig 5. Serum dipeptidyl peptidase IV activity correlates with particular T cell populations in RA patients.

As an example, only correlations for the anti-CD20 therapy group are shown. A) Negative correlation between percentages of effector/memory T cells (CD4⁺CD45R0⁺CD26⁺) and DPP-IV enzymatic activity. B) Positive correlation between percentages of naïve T cells (CD4⁺CD45R0^-CD26⁺) and DPP-IV enzymatic activity. Pearson’s coefficient (r) and significance (p) data are insert in the panels.