Summary
Gastrin (G)-producing cells from the mammalian gastric antrum have been investigated using computer-assisted morphometry and a novel double colloidal gold-labeled-immunoglobulin electron immunocytochemical procedure. Correlation analysis of human antral G-cells indicates (p<0.001) that a single population of granules exists with small (160 nm) electron-dense and large (240 nm) electron-lucent forms representing the extremes. Non-crossreacting region-specific antisera have been used to visualize G-17 and G-34 (progastrin) to the small electron-dense granules and G-17 to the other intermediate forms. From the results we propose a topographic segregation of immunoreactive gastrins within 2 apparently distinct granule subclasses and suggest that this may represent the pathway of granule maturation.
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Varndell, I.M., Harris, A., Tapia, F.J. et al. Intracellular topography of immunoreactive gastrin demonstrated using electron immunocytochemistry. Experientia 39, 713–717 (1983). https://doi.org/10.1007/BF01990288
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DOI: https://doi.org/10.1007/BF01990288