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Center for Research in Biological Systems
University of California, San Diego
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Search Results for
paramecium macronucleus
(21 results)
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CIL:15470
NCBI Organism Classification
Didinium nasutum
Biological Process
macronucleus organization
Cellular Component
macronucleus
Food vacuole and macronucleus of Didinium. The food vacuole contains unexploded trichocysts of Paramecium. Further details available at Wessenberg, H. and Antipa, G. 1968. Studies on Didinium nasutum....
CIL:36658
NCBI Organism Classification
Paramecium multimicronucleatum
Biological Process
pronuclear migration
Cellular Component
pronucleus
In an enlargement of a pronucleus in the chromatin material appears as sparsely scattered opaque bodies, as may be expected of a haploid nucleus, in a medium dense nucleoplasm. The nuclear envelope of...
CIL:36647
NCBI Organism Classification
Paramecium multimicronucleatum
Biological Process
nuclear pore distribution
Cellular Component
macronucleus
Grazing thin section through the nuclear envelope of a macronucleus. Nuclear pores are packed so tightly that they often form a hexagonal array with 6 pores surrounding a central pore. The pores often...
CIL:39205
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:36657
NCBI Organism Classification
Paramecium multimicronucleatum
Biological Process
pronuclear migration
Cellular Component
pronucleus
During self conjugation two cells from a 6-day old culture come together, bridges are formed between them and haploid products of meiotic division of their micronuclei are exchanged between the mating...
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:36662
NCBI Organism Classification
Paramecium multimicronucleatum
Biological Process
nucleolus organization
Cellular Component
nucleolus
In a 9-day old culture of stationary phase cells, two or three days post-conjugation, remnants of the previous macronucleus could be found near normal macronuclear bodies. This remnant was identified ...
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: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:9859
NCBI Organism Classification
Paramecium tetraurelia
Biological Process
nuclear division
Cellular Component
macronucleus
The macronucleus contains microtubules that lie inside a seemingly intact nuclear envelope. Microtubules orient along the axis of macronuclear elongation in the form of small bundles. The section is i...
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