Fig. 6. 3D modeling of H,K-ATPase-rich membranes in parietal cell.
(A) Contours were drawn around membranes in a cell volume of about 6 µm3. Each membrane unit was defined as an object and assigned a separate color. Three crude mitochondrial profiles are inserted in red for size comparison and orientation. Note that some membranes appear as tubules but the majority are flattened cisternal discs, often arranged in small stacks. Bar, 0.5 µm.
(B) Reconstruction of tubulocisternae from a larger area surrounding a canalicular lumen (large blue structure). Bar, 1 µm.