CD4 and allergic rhinitis: In another study on allergic rhinitis in house dust mite (HDM)‐sensitized BALB/c mice reported reduction in CD4+IL‐4‐secreting, serum HDM‐specific IgE, T cells, decrease in nasal epithelial secretion of mucus, infiltration of eosinophils expression of pSTAT6 and GATA3, decline in percentage of CD4+IL‐4‐secreting splenocytes expression and reduction in allergic symptoms after luteolin treatment (Liang et al. 2020).