1988 Volume 19 Issue 1 Pages 365-367
The morphology of endolymphatic sac in golden hamster was observed by light and electron microscopy and the distribution of cytokeratin (predominantly 56kd and 64kd) was studied immunohistochemically in the epithelium of the endolymphatic sac. Cytokeratin immunoreacivity is commonly localized in the cytoplasm of the epithelial cells. But some epithelial cells indicate weaker reactivity or none. The subepithelial tissue and intraluminal space show no immunoreaction for cytokeratin. By the ultrastructural study, the epithelial cells of the endolymphatic sac have many bundles of 10nm-filaments. So the result of this study suppose the epithelial cells of the endolymphatic sac have many cytokeratin bundles in the cytoplasm.
