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(A) Comparison of mucus IL-4, IL-5, and IL-13 levels between healthy control and CRS patients. IL-5 and IL-13 levels were significantly elevated in CRS patients compared to controls, while no significant difference was found for IL-4. Solid lines indicate the mean +/− SEM. (B) Correlation between mucus levels of IL-4, IL-5, and IL-13 in CRS. All correlations were moderate or strong (p<0.0001 for all comparisons).
