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

CIL:10950*  Cite 
Description

Schwann cells in peripheral nerves secrete a layer similar to the basal lamina called the lamina externa, boundary layer, or basement membrane. In this micrograph, the lamina externa surrounds the Schwann cells that wrap around both myelinated and unmyelinated axons in a mixed nerve from cat pericardium. Arrows indicate several examples of the outer limit of the basal lamina. Myelinated axons can be distinguished from unmyelinated ones by presence of repeated dark radial rings. Figure 26 from Chapter 1 (The Cell Surface) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. A PDF copy of the accompanying chapter is available on the ASCB's BioEDUCATE website.

Biological Sources
NCBI Organism Classification
Felis catus
Cell Type
peripheral neuron
myelinating Schwann cell
Cellular Component
basement membrane
extracellular region part
plasma membrane
Attribution
Names
Don W. Fawcett
Published
ISBN 0721635849
Link
The Cell, 2nd Ed. by D.W. Fawcett
Citation
Digital Object Identifier (DOI)
doi:10.7295/W9CIL10950
Archival Resource Key (ARK)
ark:/b7295/w9cil10950
Grouping This image is part of a group.
Imaging
Image Type
transmission electron microscopy (TEM)
Image Mode
illumination by electrons
detection of electrons
Parameters Imaged
electron density
Source of Contrast
stain with broad specificity
Visualization Methods
electron-dense stain
Data Qualifiers
processed data
Sample Preparation
Methods
crosslinking-fixative fixed tissue
Relation To Intact Cell
microtome-sectioned tissue
Dimensions
Spatial Axis Image Size Pixel Size
X 898px ——
Y 1264px ——