CFTR is present in many other types of epithelial cells,
including in the lung and in the pancreas. Cholera does not
typically affect these tissues, since infection occurs in the gut,
and cholera toxin does not move into the bloodstream. However, some
people have a mutation in CFTR that decreases its activity, and
thus reduces the release of chloride ions from the cytosol of
epithelial cells into the lumen of these organs. Which of the
following are the most likely...