IL22 and non-Hodgkin lymphoma: Compared with normal controls (5 samples undetectable; 16.27 ± 2.245 pg/ml; n = 29), plasma IL-22 level was significantly increased in newly-diagnosed B-NHL patients (23.61 ± 2.304 pg/ml; n = 22; P = 0.0292) rather than in T-NHL patients (14.84 ± 1.859 pg/ml; n = 8; P = 0.7961) (Figure 3A).