Summary
The ruthenium red “staining” of the surface coats was studied in the adrenal medullary cells of golden hamster. Both immersion and perfusion fixation was used with the ruthenium red containing fixative, however, only the perfusion fixation gave positive results. A rather thick electron dense ruthenium red positive layer was found on the plasma membrane of the endothelial cells, around the capillaries in the basal lamina, in the basement membrane of the chromaffin cells as well as on the apical and lateral cell surfaces of the adrenomedullary cells. Coated pits and coated vesicles usually showed an intensive ruthenium red staining, but the other cell components in the cytoplasm did not. On the basis of these observations author suggests that the ruthenium red positive material corresponds to acidic mucopolysaccharides in the hamster adrenal medulla, and its wide-ranging occurrence is indicative of its significance in the secretion process of catecholamines.
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Benedeczky, I., Smith, A.D. Ruthenium red staining of the hamster adrenal medulla. Histochemie 32, 213–219 (1972). https://doi.org/10.1007/BF00306029
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DOI: https://doi.org/10.1007/BF00306029