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Cell Nucleus

The center of a cell, where [most] of the DNA, packaged in chromosomes, is contained.

Source: GreenFacts, based on DiscoverySchool.com Genetics Glossary 

A cell with a large central nucleus. The dark mass within the nucleus are the chromosomes

Source: CoRIS Glossary 

Cell

Español: Núcleo (de una célula)
Français: Noyau (d'une cellule)

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