[Ultrastructural changes in the nucleus and the nucleolus of Euglena gracilis Z during the cell cycle]
[Article in
French]
- PMID: 819170
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[Ultrastructural changes in the nucleus and the nucleolus of Euglena gracilis Z during the cell cycle]
[Article in
French]
C R Acad Hebd Seances Acad Sci D.
.
Abstract
The chromosomes and nucleolus of the Euglenineae remain visible in electron microscopy throughout the cell cycle. This peculiarity allowed to show cyclic variations of the nucleus structure in synchronized cells of Euglena gracilis Z: I. different stages of chromosome condensation was observed; 2. ultrastructural modifications in the organization of the nucleolus were evidenced, characterized by its apparent continuity ("open appearence") or discontinuity ("closed appearance") with the nucleoplasm.
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