Diagram of a parietal cell. The cytoplasm of the parietal ceil stains with eosin largely because of the extensive amount of membrane comprising the intracellular canaliculus, tubulovesicular system, mitochondria, and the relatively small number of ribosomes. This cell produces HCl and intrinsic factor. (Based on Lentz TL. Cell Fine Structure: An Atlas of Drawings of Whole-Cell Structure. Philadelphia: WB Saunders, 1971.)
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