Reports the use of liposomes to deliver a cystic fibrosis conductance regulator (CFTR) expression plasmid to epithelia of the airway and to alveoli deep in the lung, leading to the correction of the ion conductance defects found in the trachea of transgenic (cf/cf) mice. Expression of functional CFTR protein from plasmid pREP8-CFTR in HeLa cells; Detection of human CFTR in different regions of the mouse airway following transfection; More.