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

CIL:12331*  Cite 

A grazing section through the dorsal surface of Euplotes showing cross sections of cilia in four of the sparsely ciliated kineties . A layer of mitochondria underlies the pellicle. A replication band of the DNA in the macronucleus is typical of hypotrichs. The basal bodies and cilia of one cirrus are found as well as the contractile vacuole. EM taken on 8/1/67 by R. Allen with Philips 200 operating at 60kV. Neg. 1,800X. Bar = 5µm. Standard glutaraldehyde fixation followed by osmium tetroxide, dehydrated in alcohol, and embedded in an epoxy resin. Microtome sections prepared at approximately 75nm thickness. A print of the negative was scanned and processed in Photoshop. This image is best used for qualitative analysis. A high resolution version of this image is in the library (CIL:38868) is available for quantitative analysis. Additional information is available at (

Biological Sources
NCBI Organism Classification
Euplotes sp.
Cell Type
cell by organism
eukaryotic cell
Eukaryotic Protist
Ciliated Protist
Cell Line
Euplotes sp. from Carolina Biological Supply
Cellular Component
contractile vacuole
Biological Context
Biological Process
ciliary or flagellar motility
macronucleus organization
DNA replication checkpoint
cytoplasm organization
Molecular Function
visual nuclear replication
Richard Allen
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
osmium tetroxide
uranyl salt
lead salt
Processing History
recorded image
Print from negative scanned for Photoshop.
Data Qualifiers
processed data
suitable for spatial measurements
Spatial Axis Image Size Pixel Size
X 2226px ——
Y 3000px ——