IL10 and juvenile idiopathic arthritis: We found significantly higher serum IL-10 levels in JIA patients, especially with active disease, in oligo- and poly-JIA, as well as in groups of patients with short-lasting and long-lasting disease in comparison to the healthy control group (p = 0.008, p = 0.008, p = 0.047, p = 0.018, p = 0.036, p = 0.020, respectively).