CIL:36649, Paramecium multimicronucleatum, cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist. CIL. Dataset

NCBI Organism:Paramecium multimicronucleatum; Cell Types:cell by organism, eukaryotic cell, , ; Cell Components:micronucleus Biological process:micronucleus organization

Licensing

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

CIL:36649^* Cite

Description

A view of the micronuclei of Paramecium multimicronucleatum. The circumferential band cut in cross section in the upper nucleus looks like it is composed of a band of four microtubules. This band is cut tangentially in the nucleus to the left and may appear as three disbursed segments in the lower nucleus. Whether these microtubules are remnants of previous mitotic events or are a constant feature of micronuclei is not known at this time. TEM taken on 3/18/81 by R. Allen with Hitachi HU11A operating at 75kV. Neg. 18,000X. Bar = 0.25µm.

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 negative was printed to paper and the image was scanned to Photoshop. This digitized image is available for qualitative analysis. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).

Biological Sources

NCBI Organism Classification: Paramecium multimicronucleatum
Cell Type: cell by organism; eukaryotic cell; Eukaryotic Protist; Ciliated Protist
Cellular Component: micronucleus

Biological Context

Biological Process: micronucleus organization

Attribution

Names: Richard Allen (University of Hawaii)

Citation

Digital Object Identifier (DOI): doi:10.7295/W9CIL36649
Archival Resource Key (ARK): ark:/b7295/w9cil36649

Imaging

Image Type: transmission electron microscopy (TEM); illumination by electrons
Image Mode: detection of electrons; film
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; film; Print from negative scanned for Photoshop.
Data Qualifiers: processed data

Sample Preparation

Methods: glutaraldehyde fixed tissue; osmium tetroxide fixed tissue; tissue in epoxy resin embedment; microtome-sectioned tissue
Relation To Intact Cell: microtome-sectioned tissue

Dimensions

Spatial Axis	Image Size	Pixel Size
X	1656px	——
Y	1866px	——