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V. T. MARCHESI, M. L. SEARS, R. J. BARRNETT; Electron Microscopic Studies of Nucleoside Phosphatase Activity in Blood Vessels and Glia of the Retina. Invest. Ophthalmol. Vis. Sci. 1964;3(1):1-21. doi: https://doi.org/.
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© ARVO (1962-2015); The Authors (2016-present)
Nucleoside phosphatase activity was localized to the basement membranes of blood, vessels and to glial cell plasma membranes in the retina with the electron microscope. The endothelial cells lining the small blood vessels were nonreactive in contrast to the endothelium of capillaries in heart and lung. Extensive enzymatic activity was found associated with the interspaces between adjacent glial elements and glial and neuronal elements. These findings are discussed in terms of the possible relationship of this enzymatic activity to permeability phenomena.
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