FIGURE 3.

Quantification of CD19⁺ B cells and CD27⁺ plasma cells in bronchial tissue from eosinophil^high and eosinophil^low patients. Bronchial biopsies were formalin‐fixed, paraffin‐embedded. Tissue sections were stained for CD19 (A &C) and CD27 (B & D) with results presented as the number of positive cells per mm² of subepithelium. Images A and B represent typical staining; size bars illustrate 100 μm. RNA was extracted and sequenced from bronchial brush samples. Data are presented as relative gene expression for CD19 (E) and CD27 (F). Comparisons between eosinophil^high and eosinophil^low were by Mann‐Whitney test: all non‐significant. Bars represent median values with interquartile range