Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12891-015-0707-y/MediaObjects/12891_2015_707_Fig4_HTML.gif)
DPP-IV in blood mononuclear cell (BMNC) in RA patients with clinical improvement of the disease. Cell surface DPP-IV-like enzymatic activity (n = 18) and the median fluorescence intensity (MFI) of DPP-IV in lymphocytes (n = 14) were determined in patients exhibiting at least a moderate improvement of the disease, individual entry and follow-up values are depicted. *p < 0.05, Wilcoxon pair test