IL17A and acute respiratory distress syndrome: Afterward, Th17/Treg secretory cytokines were measured via ELISA, which showed that serum levels of IL-17A (P < 0.001) in Th17 cells and IL-10 (P < 0.05) in Treg cells were all boosted in ARDS infants compared to healthy controls (P < 0.001; Figure 1(c)).