Fig. 1.

Cystic fibrosis transmembrane conductance regulator (CFTR) expression in airway epithelial cell lines. Western blot analysis of CFTR was performed on cell lysates of 16HBE sense (S) and antisense (AS) CFTR cell lines and C38 and IB3-1 cell lines using a rabbit polyclonal anti-CFTR antibody. Thirty micrograms of protein was loaded per well. A mouse β-actin antibody was used as loading control. Data are representative of two different experiments.