A patient is going skiing high in the Rockies and is given acetazolamide to protect against altitude sickness. Unfortunately, the patient is also a type 1 diabetic. He is admitted to the hospital in a worsening ketoacidosis. In which of the following cells has acetazolamide inhibited a reaction that has led to the severity of the metabolic acidosis?
White blood cells Red blood cells Lens of the eye Hepatocyte