Image / CIL:36663, Paramecium multimicronucleatum, cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist

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Title: CIL:36663, 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: In one experiment in which electric shock was applied to Paramecium cells to trigger trichocyst discharge the macronucleus in one cell was observed to undergo morphological changes of two types. First, a large area of the nucleus, normally found to contain electron-opaque foci, had changed into whorls of more electron-transparent filamentous material. Secondly, a section of the nuclear envelope had folded into a stack like the annulate lamellae seen in oocytes of many vertebrate and invertebrate cells (see Kessel, Int. Rev. Cytol. 82:181-303, 1983). The nuclear pores were present in part of this stack of the nuclear envelope while in other parts the pores were reduced or absent and a layer of dots or lines occupied the nucleoplasmic space between the two envelope segments. Presumably these annulate lamellae represent a temporary storage mechanism for excess nuclear envelope. TEM taken on 2/28/84 by R. Allen with Zeiss 10A operating at 80kV. Neg. 12,000X. Bar = 0.5µm.
Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp)
Allen, Richard (2021). CIL:36663, 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/J0FJ2FQJ
Type: image
Identifier: ark:/20775/bb26353132
Language: No linguistic content
Subject: Nuclear pore distribution
Macronucleus organization
Eukaryotic Protist
Eukaryotic cell
Ciliated Protist
Macronucleus
Nuclear pore
Cell by organism
Paramecium multimicronucleatum

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