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  • Title: Electron microscopical demonstration of thiols and disulphides in the porcine epidermis.
    Author: Meyer W, Schlesinger C.
    Journal: Histochem J; 1991 Sep; 23(9):419-25. PubMed ID: 1743999.
    Abstract:
    This study describes the electron microscopical distribution of free thiols and disulphides in the epidermis of the domestic pig and the wild boar, as compared to light microscopical histochemistry. With the silver methenamine method, silver labelling of thiols was clearly achieved on the keratohyalin and cytofilament accumulations in the cells of the living epidermis and the plasma membrane of granular cells. To a certain extent, the envelope and cytoplasm of young corneocytes reacted equally intensively. Disulphides were very abundant in the filaments, keratohyalin granules, and cell envelope of granular cells, and, particularly, in the envelope (marginal band) of corneal cells; the latter structure being distinctly delineated from the background. As a specific feature, the viable epidermis of the wild boar stained strongly for disulphides. The results obtained are discussed in view of actual concepts of epidermal keratinization and corneal cell function.
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