Allen, Richard (2021). CIL:10008, Didinium nasutum, eukaryotic cell, Eukaryotic Protist, Ciliated Protist. In Cell Image Library. UC San Diego Library Digital Collections. Dataset. https://doi.org/10.6075/J0XD10T3

Toxicysts in the cytoplasm of cross sectioned non-dividing Didinium. Toxicysts (extrusomes) are multilayered cylinders that are discharged from the cytopharynx region during capture of prey such as Paramecium. Lipid is stored as large non-membrane enclosed dense bodies in the cytosol. TEM taken on 2/18/69 by R. Allen with Philips 300. Neg. 20,500X. 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 raw, unprocessed, high resolution version of this image (CIL:9929) is in the library and available for quantitative analysis. 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/).

• 2021

• Allen, Richard

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: film; Print from negative scanned for Photoshop.

• Cell Image Library Group ID: 3411

• Didinium nasutum

• Ciliated Protist
• Eukaryotic cell
• Eukaryotic Protist
• Extrusome
• Lipid particle
• Rough endoplasmic reticulum
• Toxicyst

• Carolina Biological Supply Company, NC, U.S.A.
• Cytoplasm organization
• Organelle development
• Organelle localization
• Organelle organization

• data
• image

• No linguistic content; Not applicable

Samplenumber: 10008

Doi: https://doi.org/10.6075/J0XD10T3

Source data

• Source Record in the Cell Image Library: https://doi.org/10.7295/W9CIL10008

Other resource

• 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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2022-08-12