CIL:12300, Didinium nasutum, cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist
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- Collection
- Cite This Work
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Allen, Richard (2021). CIL:12300, Didinium nasutum, cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist. In Cell Image Library. UC San Diego Library Digital Collections. Dataset. https://doi.org/10.6075/J0988649
- Description
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Didinium (non-dividing) has a massive cytopharynx at its anterior end that takes the shape of a cone-shaped proboscis when closed. This cytopharynx contains numerous lamellae composed of sets of microtubules that lie perpendicular to each other next to the cytopharyngeal membrane. Vesicles containing a uniform medium dense material (mucocysts?), line up between the lamellae. Presumably these vesicles fuse with the single cytopharyngeal membrane that covers the lamellae. Extrusomes called toxicysts lie within in the cytopharyngeal region. TEM taken on 9/19/68 by R. Allen with Philips 300 operating at 60kV. Neg. 10,300X. Bar = 0.5µm. The negative was printed to paper and the image was scanned to Photoshop. This digitized image is available for qualitative analysis. A high resolution version is available for quantitative analysis (CIL:38861). Standard glutaraldehyde fixation followed by osmium tetroxide, dehydrated in alcohol and embedded in an epoxy resin. Microtome sections prepared at approximately 75nm thickness. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).
- Date Issued
- 2021
- Researcher
- Technical Details
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Preparation: glutaraldehyde fixed tissue; osmium tetroxide fixed tissue; tissue in epoxy resin embedment; microtome-sectioned tissue
Relation to intact cell: microtome-sectioned tissue
Item type: transmission electron microscopy (TEM); illumination by electrons
Imaging mode: detection of electrons; film
Parameter 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; film; Print from negative scanned to Photoshop.
Data qualification: Processed;spatialmeasurements - Series
- Scientific Name
- Anatomy
- Topics
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- Language
- No linguistic content; Not applicable
- Identifier
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Samplenumber: 12300
- Related Resources
- Source Record in the Cell Image Library: https://doi.org/10.7295/W9CIL12300
- Paramecium and Other Ciliates: Richard Allen's Image Collection. Pacific Biosciences Research Center. University of Hawaii at Manoa: https://www5.pbrc.hawaii.edu/allen/
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- License
- Copyright
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Creative Commons Public Domain Dedication
Use: The person(s) who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Constraint(s) on Use: This work may be used without prior permission.
- Digital Object Made Available By
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Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp)
- Last Modified
2022-08-12