“…Among these Th2 cytokines, IL-4 promotes the differentiation, proliferation, and activation of B cells; induces inflammatory cells eosinophils to infiltrate into the lung tissue; and increases the levels of IgE and IgG1 in serum (Barnes, 2008). IL-5 can control the formation and proliferation of eosinophils and enhances the IL-4-induced IgE secretion during asthma (Iftikhar, Schimmel, Bender, Swenson, & Amrol, 2018). In addition, IL-13 promotes the differentiation of B cells and directly induces an inflammatory reaction and AHR in the lungs of asthmatic mice (Karo-Atar, Bitton, Benhar, & Munitz, 2018;Lightwood et al, 2018).…”