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Center for Research in Biological Systems
University of California, San Diego
9500 Gilman Drive
La Jolla, CA 92093-0608, USA
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Search Results for
nuclear envelope
(126 results)
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CIL:7341
NCBI Organism Classification
Opercularia [NCBITaxon:168247]
Biological Process
nucleocytoplasmic transport
Cellular Component
nuclear pore
A high resolution image of nuclear pores in face view included in an overview of the cytoplasm of Opercularia coarctata. TEM taken on 6/13/69 by R. Allen with Philips 300 operating at 60kV. Neg. 14,80...
CIL:9921
NCBI Organism Classification
Opercularia [NCBITaxon:168247]
Biological Process
micronucleus organization
Cellular Component
micronucleus
An image of the micronucleus and macronucleus of Opercularia coarctata. The nuclear envelope has numerous pores, at least as many per unit length as in the macronucleus. Some areas of the outer membra...
CIL:9714
NCBI Organism Classification
Coleps hirtus
Biological Process
macronucleus organization
Cellular Component
macronucleus
High resolution image of the macronucleus of Coleps hirtus. Heterochromatin and nucleoli are seen as smaller and larger stained bodies, respectively, in the macronucleus. Many nuclear pores exist in t...
CIL:36794
NCBI Organism Classification
Paramecium caudatum
Biological Process
macronucleus organization
Cellular Component
macronucleus
Nucleoli in a macronucleus of a cell undergoing micronuclear division. The nucleolus appears to have an organized surface layer composed of parallel threads of subunits. These may be developing riboso...
CIL:7600
NCBI Organism Classification
Halteria grandinella
Biological Process
macronuclear organization
Cellular Component
macronucleus
High resolution transmission electron micrograph of Halteria showing both the large macronucleus with nuclear pores, dense heterochromatin bodies and nucleolus, and the small micronucleus.
CIL:9918
NCBI Organism Classification
Opercularia [NCBITaxon:168247]
Biological Process
nucleocytoplasmic transport
Cellular Component
nuclear pore
Nuclear pores in face view of Opercularia coarctata. TEM taken on 6/13/69 by R. Allen with Philips 300 operating at 60kV. Neg. 14,800X. Bar = 0.25µm. A print of the negative was scanned and processed...
CIL:36260
NCBI Organism Classification
Vorticella convallaria
Biological Process
micronucleus organization
Cellular Component
micronucleus
Like other ciliates two types of nuclei are present. A germinative micronucleus and a RNA-producing macronucleus. Both have nuclear envelopes with pores and both have ribosomes attached to their outer...
CIL:36646
NCBI Organism Classification
Paramecium multimicronucleatum
Biological Process
macronucleus organization
Cellular Component
macronucleus
The macronucleus is the largest organelle in the P. multimicronucleatum cell and can measure 35µm long by 12µm wide. A small fraction of a macronucleus is seen in this micrograph. The chromatin appe...
CIL:36663
NCBI Organism Classification
Paramecium multimicronucleatum
Biological Process
macronucleus organization
Cellular Component
macronucleus
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...
CIL:36793
NCBI Organism Classification
Paramecium caudatum
Biological Process
micronucleus organization
Cellular Component
micronucleus
The micronucleus of Paramecium caudatum is distinctive from other closely related Paramecium such as P. multimicronucleatum and P. tetraurela. P. caudatum has only one micronucleus of a type in which ...
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