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  • Title: Isolation and characterization of brain endothelial cells: morphology and enzyme activity.
    Author: Williams SK, Gillis JF, Matthews MA, Wagner RC, Bitensky MW.
    Journal: J Neurochem; 1980 Aug; 35(2):374-81. PubMed ID: 6108994.
    Abstract:
    Microvessels were isolated from rat brain using a double collagenase treatment which removed the endothelial basement membranes. The isolate was characterized by intact luminal and abluminal membranes and an absence of pericytes and astrocyte membranes. Minimal contamination by 5'-nucleotidase, an enzyme believed exclusively localized within the plasma membranes of neuroglia, established the purity of the isolated microvessels. Enrichment of alkaline phosphatase and gamma-glutamyl transpeptidase activity in microvessel preparations supports the endothelial localization of these enzymes.
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