Intrinsic factor is produced primarily by chief cells in rat and mouse, but 4 to 11% of isolated rat parietal cells also contain intrinsic factor. To test whether local conditions could alter the distribution of intrinsic factor expression, two rodent models of chronic lymphocytic gastric inflammation were examined. Immunocytochemistry was performed using antiserum against human intrinsic factor and H/K ATPase (a parietal cell marker), counting the percent of intrinsic factor-positive parietal cells. HLA-B27 transgenic rats develop chronic gastritis at age 3 months. Congenic controls expressed intrinsic factor in 8.9 Gastric glands in the zymogenic region of the stomach contain three major cell types: mucous surface cells, parietal cells, and zymogenic (chief) cells.
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