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

CIL:41705*  Cite 
Description

High Voltage (1MeV) EM image of metaphase arrested CHO cell squashed in 3:1 acetic acid:ethanol and transferred to an EM grid. Portions of 4 pairs of chromatids are seen. This micrograph was captured at a specimen tilt of 55 degrees. The accompanying image has a tilt of 45 degrees, creating a stereo pair that provides an oblique stereo view of the chromatids.

Technical Details

Cells were metaphase arrested with colcemid, then exposed to a low ionic strength medium (0.07M phosphate buffer)containing 50% D20 as a microtubule stabilizer. Preparations were squashed in 3:1 acetic acid:ethanol,stained, and transferred to an EM grid. 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
ovary
Cell Line
CHO
Cellular Component
nuclear chromosome
Biological Context
Biological Process
mitosis
mitotic metaphase
chromosome organization
Attribution
Names
Hans Ris
Citation
Digital Object Identifier (DOI)
doi:10.7295/W9CIL41705
Archival Resource Key (ARK)
ark:/b7295/w9cil41705
Grouping This image is part of a group.
Imaging
Image Type
film
Image Mode
Parameters Imaged
electron density
Source of Contrast
differences in adsorption or binding of stain
Visualization Methods
uranyl salt
Processing History
unprocessed raw data
Data Qualifiers
raw, unprocessed data
suitable for spatial measurements
Sample Preparation
Methods
chemically fixed tissue
Relation To Intact Cell
squash
Dimensions
Spatial Axis Image Size Pixel Size
X 4477px 1.27nm
Y 6624px 1.27nm