Image / CIL:36645, Paramecium multimicronucleatum, cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist

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Title: CIL:36645, 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: Like other ciliates P. multimicronucleatum has two morphologically and functionally different nuclei. Shown here is the tiny micronucleus, of which there are four, during interphase of this cell. This nucleus has the task of dividing the nuclear genome between the two daughter cells during mitosis and in forming the two haploid pronuclei one of which will be exchanged with a partner cell during conjugation. However, during interphase this nucleus is not involved in forming ribosomes or messenger RNA so it does not control the metabolic processes of the cell. This micronucleus, much smaller than in other paramecia such as P. caudatum, has a central condensed mass of chromatin surrounded by a less dense nucleoplasm. This is known as a vesicular type of micronucleus. There is a typical nuclear envelope with numerous pores. This micronucleus was from a cell in day 5 of a culture age study where cells are in mid-log phase of growth. The cell is presumably undergoing rapid metabolism. TEM taken on 5/29/78 by R. Allen with Hitachi HU11A operating at 75kV. Neg. 12,250X. Bar = 0.5µm.
Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp)
Allen, Richard (2021). CIL:36645, 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/J0BG2MXP
Type: image
Identifier: ark:/20775/bb1543152g
Language: No linguistic content
Subject: Nucleus organization
Micronucleus organization
Cytoplasm organization
Ciliated Protist
Cytoplasm
Micronucleus
Cell by organism
Eukaryotic Protist
Eukaryotic cell
Paramecium multimicronucleatum

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