Figure 2. Photo(chemo)therapy increases circulating Treg population concomitant with clinical efficacy.

Based on the PASI score, psoriasis lesions improved in all cases. Treg levels before and after photo(chemo)therapy in all patients and in the patients with less than 4.07% Treg, defined as the mean of controls, are shown. The results are presented as mean ± SD *p<0.05 and **p<0.01.