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

CIL:41453*  Cite 

High voltage (1MeV) transmission electron microscopy image of a 0.5 micrometer section through a Chinese hamster ovary cell at metaphase showing a chromatid pair, with kinetochores at the centromere. The image was taken with a specimen tilt of 67 degrees and is one of a group of 10 tilts from 77 degrees to 32 degrees at 5 degree intervals. Pairs of images provide oblique stereo views of the chromosome.

Technical Details

CHO cells at metaphase were fixed with paraformaldehyde followed by OsO4, embedded in epoxy resin and 0.5 micrometer 'thick' sections stained with uranly acetate for HVEM observation. See also: H. Ris 1981 Stereoscopic electron microscopy of chromosomes. Meth Cell Biol 22:77-96 H. Ris 1978 Preparation of chromatin and chromosomes for electron microscopy. Meth Cell Biol 18:220-246.

Biological Sources
NCBI Organism Classification
Cricetulus griseus
Cell Type
epithelial cell
Cell Line
Cellular Component
nuclear chromosome
Biological Context
Biological Process
chromosome organization
mitotic metaphase
Hans Ris
Digital Object Identifier (DOI)
Archival Resource Key (ARK)
Grouping This image is part of a group.
Image Type
Image Mode
Parameters Imaged
electron density
Source of Contrast
differences in adsorption or binding of stain
Visualization Methods
uranyl salt
Data Qualifiers
raw, unprocessed data
suitable for spatial measurements
Sample Preparation
formaldehyde fixed tissue
tissue in plastic embedment
Relation To Intact Cell
microtome-sectioned tissue
Spatial Axis Image Size Pixel Size
X 2824px 1nm
Y 4232px 1nm