Image / CIL:13131, Paramecium multimicronucleatum, cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist

View source image on contributor's website.

Get Citation

Have a question about this item?

Contact Owner

Item information. View source record on contributor's website.

Title: CIL:13131, Paramecium multimicronucleatum, cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist
Creator: Allen, Richard
Contributor: Allen, Richard
Date Created and/or Issued: 2021
Contributing Institution: UC San Diego, Research Data Curation Program
Collection: Cell Image Library
Rights Information: Creative Commons Public Domain Dedication
Constraint(s) on Use: This work may be used without prior permission.
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.
Description: The cytoproct is the site of spent vacuole defecation on the surface of Paramecium. When closed the cytoproct forms a long narrow wavy ridge along the posterior suture. At its apex the ridge is about 0.2µm wide and it can be as much as 12µm or more in length. This ridge has the ability to be pulled down against the approaching spent vacuole where the plasma membrane covering the midline of the ridge will meet and fuse with the membrane of the vacuole. The ridge contains unique fibers on both of its lips that mesh with each other as they meet inside the ridge (see Allen and Wolf, J. Cell Sci. 14:611-631, 1974). TEM taken on 4/19/79 by R. Allen with Hitachi HU11A operating at 60kV. Neg. 10,000X. Bar = 0.5µm. The negative was printed to paper and the image was scanned to Photoshop. This digitized image is available for qualitative analysis. An unprocessed, high resolution version of this image (CIL:12343) 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/).
Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp)
Allen, Richard (2021). CIL:13131, Paramecium multimicronucleatum, 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/J0GB235G
Type: image
Identifier: ark:/20775/bb17478163
Language: No linguistic content
Subject: Cortical cytoskeleton organization
Eukaryotic Protist
Eukaryotic cell
Cell by organism
Ciliated Protist
Cell cortex
Cytoproct
Cytoplasm
Paramecium multimicronucleatum
Cell Image Library Group ID: 4013

About the collections in Calisphere

Learn more about the collections in Calisphere. View our statement on digital primary resources.

Copyright, permissions, and use

If you're wondering about permissions and what you can do with this item, a good starting point is the "rights information" on this page. See our terms of use for more tips.

Share your story

Has Calisphere helped you advance your research, complete a project, or find something meaningful? We'd love to hear about it; please send us a message.