Korean Journal of Veterinary Research 1986;26(1):19-30.
Electron Microscopic Observations of Endocrine Cells on the Squirrel's Gastrointestinal Tract
Hyeung-sik Lee1, Jae-hyun Lee2
1Daegu Oriental Medical College
2Department of Veterinary Medicine, College of Agriculture, Kyungpook National University
다람쥐 소화관의 내분비세포에 관한 전자현미경적 연구
이형식1, 이재현2
1대구한의과대학 한의학과
2경북대학교 농과대학 수의학과
Endocrine cells were observed in the gastrointestinal tract of the squirrels by light microscopy using Grimelius and Masson-Hamperl silver impregnation, and in the stomach and duodenum by electron microscopy. Light microscopically, argyrophil cell decreased gradually in number in the pyloric region and ileum, stomach, duodenum and jejunum and rectum in the order listed. Argentaffin cells were moderately distributed in the stomach, pyloric region and duodenum, while absent in the jejunum, ileum and rectum. Five kinds of cell types, EC, ECL, D, $D_1$ and G cells were identified in the stomach and three kinds of cell types, S, $EC_1$ and $EC_2$ were also identified in the duodenum by electron microscopy. A cilium noted in the cytoplasm of $D_1$-type cell. The species differences in the distribution, size and structure of the secretory granules were discussed.

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