The effect of quercetin and montelukast on pro-inflammatory cytokines and inflammatory mediators in OVA induced allergic rhinitis in rats. A, IL-6; B, INF-γ; C, IL-4; D, IgE. The method described in the material and methods. The data are presented in mean±SEM. *P<0.05,*P<0.01 and ***P<0.001 compared with the AR control group.