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

CIL:38892*  Cite 

A grazing section through the cell’s surface shows segments of six rows of cilia running across the figure sectioned superfically at the top and deeper into the cell as one progresses down the figure. Crests of the polygonal ridges appear at the top of the figure where the expanded alveoli fill most of the space in the surface depressions. Septa, the borders of adjoining alveolar sacs, run between basal body/cilium complexes along a kinety. Trichocyst tips penetrate into the lateral ridges that separate the concave depressions of a kinety. Within the cortical cytosol a more superficial system of striated bands connects the slopes of adjacent ridges, laterally, longitudinally and diagonally. Internal to the striated bands is a meshwork of centrin-containing fibrous bundles called the infraciliary lattice. This meshwork surrounds the proximal half of basal bodies but does not insert into the pellicular membranes. Collidine-buffered fixative. TEM taken on 7/8/69 by R. Allen with Philips 300 operating at 60kV. Neg. 14,800X.

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. The raw negative was scanned with an Epson Perfection V750 Pro and this high resolution image is best used for quantitative analysis.

Biological Sources
NCBI Organism Classification
Paramecium caudatum
Cell Type
cell by organism
eukaryotic cell
Eukaryotic Protist
Ciliated Protist
Cellular Component
cell cortex
cortical cytoskeleton
microtubule basal body
Richard Allen (University of Hawaii)
Digital Object Identifier (DOI)
Archival Resource Key (ARK)
Grouping This image is part of a group.
Image Type
transmission electron microscopy (TEM)
illumination by electrons
Image Mode
detection of electrons
Parameters Imaged
electron density
Source of Contrast
stain with broad specificity
Visualization Methods
stain with broad specificity
uranyl salt
lead salt
osmium tetroxide
Processing History
recorded image
unprocessed raw data
Data Qualifiers
raw, unprocessed data
suitable for spatial measurements
Spatial Axis Image Size Pixel Size
X 4545px 1nm
Y 6012px 1nm