Licensing

Public Domain: This image is in the public domain and thus free of any copyright restrictions. However, as is the norm in scientific publishing and as a matter of courtesy, any user should credit the content provider for any public or private use of this image whenever possible. Learn more

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

CIL:36630^* Cite

Description

Protozoa, including P. multimicronucleatum, unlike most cells, have tubular cristae in their mitochondria. Tubular cristae, however, do occur occasionally in higher organisms such as in the lutein cells and testes interstitial cells of humans. Mitochondria are particularly numerous in the cortical region of paramecia. Collidine-buffered fixative. This image includes trichocysts that have expanded internally during fixation. TEM taken on 12/18/68 by R. Allen with Philips 300 operating at 80kV. Neg. 16,000X. Bar = 0.5µm.

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: mitochondrion; trichocyst; cytoplasm

Biological Context

Biological Process: inner mitochondrial membrane organization; cytoplasm organization

Attribution

Names: Richard Allen (University of Hawaii)

Citation

Digital Object Identifier (DOI): doi:10.7295/W9CIL36630
Archival Resource Key (ARK): ark:/b7295/w9cil36630

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	2321px	——
Y	3000px	——