IL17A and asthma: A flavonoid metabolite isolated from Scutellaria baicalensis Georgi was administered intragastrically to mice with asthma, the inhibition of STAT3 in lung tissue, the promotion of FOXP3 in lung tissue, the reduction in serum IgE, IL-17 A, and IL-6 secretion in BALF, the promotion of IL-10 secretion, and the improvement of Th17/Treg immune imbalance were observed (Xu et al., 2017).