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pubmed:abstractText |
The distribution of the brain-specific S 100 protein was studied by an immunohistochemical method at the ultrastructural level. The S 100 protein was localized in the plasma membrane of astrocytes, oligodendrocytes and neurons, but not in that of endothelial cells and pericytes. Astrocytic filaments also possessed S 100 activity. The vascular basement membrane lacked traces of S 100.
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