H+/K+-ATPase beta (B) and alpha (D and F) subunits distribution in parietal cells from a patient with ML-IV (A–D) and patient with Z-E (E and F). Phase microscopy view (A, C, and E) and the corresponding parietal cells stained with fluorescein phallacidin in green, and anti-H+/K+-ATPase beta and alpha subunits in red (B, D, and F). (Magnification: ×1,000.)