Alternate header for print version

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

CIL:12064*  Cite 

High resolution image of an isolated and longitudinally fractured cilium exposing the middle of the cilium. The spokes extend from the doublets toward the two singlet microtubules. These spokes are spaced unevenly so they appear to be arranged into triplets. The fracture plane, while in general is longitudinal, exposes the singlets and outer doublets at different levels so various periodicities appear along these microtubules. The cilium may also be slightly twisted along its length. TEM taken on 2/15/88 by C. Schroeder with Zeiss 10A operating at 80kV. Neg. 31,500X. The raw film was scanned with an Epson Perfection V750 Pro. This image is best used for quantitative analysis.

Biological Sources
NCBI Organism Classification
Paramecium multimicronucleatum
Cell Type
cell by organism
eukaryotic cell
Eukaryotic Protist
Ciliated Protist
Cellular Component
radial spoke
cilium axoneme
axonemal microtubule
Richard Allen (University of Hawaii)
C. Schroeder
Digital Object Identifier (DOI)
Archival Resource Key (ARK)
Grouping This image is part of a group.
Spatial Axis Image Size Pixel Size
X 4328px 0.63nm
Y 2648px 0.63nm