Figure 4

Representative brightfield images of the apical surface of untreated VS TGFβ-1 treated cultures (A). Scale bars = 1 mm, inset = × 3 magnification. Quantification of apical surface contrast (B), as a proxy for mucus reflectance, for TGFβ-1 treated cultures. Changes in TEER post-stimulation (C) when normalised and presented as percentage change from untreated. Comparisons were performed using multiple T tests with Sidak-Holm multiple comparisons (****, P < 0.0001; ***, P = 0.0002; **, P = 0.002; *, P = 0.033). n = 2 donors for NHBEs, n = 3 donors for NHLFs and n = 3 donors for DHLFs, N = 4–8 for each condition and presented as the mean ± SD. NHBE = Normal Human Bronchial Epithelial cell; NHLF = Normal Human Lung Fibroblast; DHLF = Diseased Human Lung Fibroblasts ; UT = untreated.