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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:34601*  Cite 
Description

High resolution micrograph of a cross section the 9 + 2 axoneme of the cilium of Tetrahymena. The plasma membrane covers the axoneme and is continuous with the plasma membrane covering the cell body. Each doublet tilts inward to the tangent of the axonemal cylinder. Two arms, an inner arm and outer arm, extend from the complete microtubule of each doublet. These arms have ATPase activity and are called dyneins. They cause one doublet to slide against the adjacent doublet. Other protein links in the axoneme are elastic and induce the characteristic bending of the cilium and prevent excess sliding as the doublets slide past each other. TEM taken on 7/15/67 by R. Allen with Philips 200 operating at 60kV. Neg. 19,200X. The raw film was scanned with an Epson Perfection V750 Pro. This image is best used for quantitative analysis.

Technical Details

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
Tetrahymena pyriformis
Cell Type
cell by organism
eukaryotic cell
Eukaryotic Protist
Ciliated Protist
Cellular Component
axoneme
axonemal dynein complex
axonemal microtubule
Biological Context
Biological Process
axonemal organization
cilium axoneme assembly
Attribution
Names
Richard Allen (University of Hawaii)
Citation
Digital Object Identifier (DOI)
doi:10.7295/W9CIL34601
Archival Resource Key (ARK)
ark:/b7295/w9cil34601
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
unprocessed raw data
Data Qualifiers
raw, unprocessed data
suitable for spatial measurements
Dimensions
Spatial Axis Image Size Pixel Size
X 4364px 0.78nm
Y 5152px 0.78nm