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Licensing
Public Domain: This image is in the public domain and thus free of any copyright restrictions. However, as is the norm in scientific publishing and as a matter of courtesy, any user should credit the content provider for any public or private use of this image whenever possible. Learn more
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*CIL – Cell Image Library accession number. Please use this to reference an image.

CIL:13111*  Cite 
Description

Cross section through a radial arm of the contractile vacuole complex. The collecting canal occupies the center of the arm whose membrane is supported by the radial microtubular ribbon which has now divided into at least six segments and surrounds the canal. Gaps between the segments are where the mass of membrane tubules of the smooth spongiome opens into the canal. Decorated tubules occurring in bundles form the peripheral layer of the radial arm. TEM taken on 5/2/79 by R. Allen with Hitachi HU11A operating at 75kV. Neg. 18,000X. Bar = 0.2µm. The negative was printed to paper and the image was scanned to Photoshop. This digitized image is available for qualitative analysis. An unprocessed, high resolution version of this image (CIL:13105) is in the library and available for quantitative analysis. Standard glutaraldehyde fixation followed by osmium tetroxide, dehydrated in alcohol and embedded in an epoxy resin. Microtome sections prepared at approximately 75nm thickness. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).

Biological Sources
NCBI Organism Classification
Paramecium multimicronucleatum
Cell Type
cell by organism
eukaryotic cell
Eukaryotic Protist
Ciliated Protist
Cellular Component
contractile vacuole
contractile vacuole collecting tubule
contractile vacuole radial arm
microtubule associated complex
Attribution
Names
Richard Allen (University of Hawaii)
Link
http://www5.pbrc.hawaii.edu/allen/
Citation
Digital Object Identifier (DOI)
doi:10.7295/W9CIL13111
Archival Resource Key (ARK)
ark:/b7295/w9cil13111
Grouping This image is part of a group.
Imaging
Image Type
transmission electron microscopy (TEM)
illumination by electrons
Image Mode
detection of electrons
film
Parameters Imaged
electron density
Source of Contrast
stain with broad specificity
Visualization Methods
stain with broad specificity
osmium tetroxide
uranyl salt
lead salt
Processing History
recorded image
film
Print from negative scanned for Photoshop.
Data Qualifiers
processed data
Dimensions
Spatial Axis Image Size Pixel Size
X 2057px ——
Y 2442px ——