Fig. 4. Correlation of ECP levels with local specific antibodies in nasal secretions. (A) Total IgE, (B) specific IgE to D. farinae, (C) specific IgE to D. farinae, (D) specific IgA to D. farinae, and (E) secretory IgA to D. farinae were measured. All values were adjusted for the protein ratio. Pearson's rank correlation coefficients were applied to the test. ECP, eosinophil cationic protein.