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American Journal of Pathology, Vol 89, 391-399, Copyright © 1977 by American Society for Investigative Pathology

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Antropyloric G-cell hyperplasia in hypercalcemic rabbits bearing the VX2 carcinoma

Y Dayal, EF Voelkel, AH Tashjian Jr, RA DeLellis and HJ Wolfe

The number of distribution and the numbers of G cells in the antropyloric region of the rabbit stomach were mapped employing immunoperoxidase localization and morphometric quantitation and compared to similar analyses in hypercalcemic rabbits bearing the VX2 carcinoma. In normal animals, G cells were confined to the lower third of the antropyloric mucosa, where they were randomyly distributed within the mucosal glands. In contrast, tumor-bearing animals showed an extension of these cells into the middle third of the antropyloric mucosa. The absolute counts of G cells in control rabbits were 5.3 +/- 0.78 (mean +/- SE) per unit area, while those in hypercalcemic tumor- bearing rabbits were 11.9 +/- 0.46, a statistically significant increase. It is concluded that rabbits bearing VX2 carcinoma have G- cell hyperplasia.