ISSN:
0002-9106
Keywords:
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Medicine
Notes:
The external glial limiting membrane in Macaca is a multilaminar epithelium-like mantle formed by the perikarya and interdigitating cell processes of astrocytes. It is separated from the overlying subarachnoid space by a typical basement membrane. Tonofilaments, about 100 Å in diameter, course through the cytoplasm of the processes in sheaths which run in different planes in successive layers of the mantle, forming a course brushwork. Beneath the surface plasma membrane of the superficial astrocytes is a filamentous layer, 500-700 Å thick, which is composed of microfilaments, about 50 Å in diameter. These microfilaments were continuous with the inner aspect of the plasma membrane. The tonofilaments appeared to terminate in the microfilamentous network. The similarity of these microfilaments to the cytocholasin B-sensitive microfilaments of epithelial cells suggested contractile properties and their participation in the motility of glial cells at the border of the brain and subarachnoid space.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/aja.1001360303
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