Fig. 8. Confocal immunofluorescent labelling of delF508-CFTR in cultured surface nasal epithelial cells from a delF508/delF508 cystic fibrosis individual. (A,B) XY confocal sections <1 µm from the apical surface. (C,D) XY confocal sections 7 µm from the apical surface. (E,F) XZ scans. A, C and E are untreated cells. B, D and F are cells treated for 18 hours at 37°C with MPB-07 (500 µM). Results are representative of data from three delF508/delF508 cystic fibrosis individuals. Magnification x2500.