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*CIL – Cell Image Library accession number. Please use this to reference an image.

CIL:10057*  Cite 

This group of micrographs illustrate the ultrastructural characteristics of the middle layer of the three meningeal layers that cover the central nervous system. The arachnoid cells contain abundant intermediate filaments that occupy a substantial volume of the cytoplasm. In some cells the intermediate filaments are organized into numerous coils of relatively uniform size and orientation. The coils appear to stack in loose hexagonal arrays (CIL:9301). The plasma membrane of these cells has many caveolae, as illustrated in this micrograph, which also shows several large intermediate filament bundles and desmosomes - insertion sites at the plasma membrane for the intermediate filaments. Adjacent arachnoid cells are connected by large desmosomes. Images were recorded using a Philips EM301 TEM at 80 kv. Original glass plates were scanned and digitized using an Epson V750 flatbed scanner with a step size of 15 micrometers. This group of images complement those published in the reference below. Reference: Michaels, JE, Tornheim, PA. Cell Tissue Res. 236:693-697 (1984).

Biological Sources
NCBI Organism Classification
Rana catesbeiana
Cell Type
barrier epithelial cell
Cellular Component
intermediate filament cytoskeleton
plasma membrane
Biological Context
Biological Process
intermediate filament cytoskeleton organization
John E. Michaels
Patricia A. Brown
Digital Object Identifier (DOI)
Archival Resource Key (ARK)
Grouping This image is part of a group.
Spatial Axis Image Size Pixel Size
X 6278px 1nm
Y 4910px 1nm