Summary
The fine structure of the mucosa of surgically removed gall-bladders was studied in three cases of cholesterosis with both thin-section and freeze-etching methods.
The principal cells of the epithelium exhibit a well developed smooth surfaced endoplasmic reticulum which is probably related to lipid transport. An abundance of macrophages is found between the epithelial cells and in the lamina propria. At places, they penetrate the basement membrane. Some of the intraepithelial macrophages show flattened smooth surfaced cisternae connected with profiles of the rough surfaced endoplasmic reticulum. In other macrophages, located adjacent to the epithelium in the lamina propria, the smooth surfaced cisternae are more numerous and larger. With increasing distance from the epithelium these profiles in the macrophages become larger and finally reach the size and appearance of foam cell vacuoles. Freeze-etching replicas demonstrate the “vacuoles” of the foam cells to contain lipids.
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Luciano, L., Wolpers, C. Die Feinstruktur der Gallenblase und der Gallengänge. Virchows Arch. Abt. B Zellpath. 14, 147–158 (1973). https://doi.org/10.1007/BF02889184
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DOI: https://doi.org/10.1007/BF02889184