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  • Title: Freeze-fracture of capillary endothelium in rat brain.
    Author: Tani E, Yamagata S, Ito Y.
    Journal: Cell Tissue Res; 1977 Jan 12; 176(2):157-65. PubMed ID: 832292.
    Abstract:
    The rat brain capillary was studied with freeze-fracture technique. The attached plasmalemmal vesicles were quite few in number on the luminal front and sometimes numerous on the contraluminal side. The fracture appearance of some tight junctions showed interconnecting ridges on face A and complementary furrows devoid of particles on face B, comparable to the common tight junction in the normal epithelia. Other tight junctions revealed a preferential disposition of quasicontinous rows of particles on shallow furrows of face B, resembling the tight junctional strands of capillary endothelium in non-cerebral tissues. Either behavior is probably due to the difference in the fracture plane around the single fibril. In addition, the tight junctional strand could surround the perimeter of the endothelial cell completely although the exposed strand of tight junction was limited in lenght.
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