Fig. 1From: Cytokine profiles in nasal fluid of patients with seasonal or persistent allergic rhinitisLevels of IL-4 and IL-13 in nasal fluid in controls, SAR and PAR: box plots of the levels of IL-4 (a dark grey) and IL-13 (b light grey) in nasal secretion are shown. IL-4 is significantly decreased in PAR compared to the controls as well as the SAR group. IL-13 is significantly decreased in SAR compared to both the controls and PAR. ***p < 0.001Back to article page