description of the structure of nucleus
The nucleolus is contained within the cell nucleus. The nucleolus (/nuËËkliËÉµlÉs/ ; plural nucleoli /nuËËkliËÉµlaÉª/) is the largest structure in the nucleus of eukaryotic cells, where it primarily serves as the site of ribosome synthesis and assembly.he nucleolus is contained within the cell nucleus. The nucleolus (/nuËËkliËÉµlÉs/ ; plural nucleoli /nuËËkliËÉµlaÉª/) is the largest structure in the nucleus of eukaryotic cells, where it primarily serves as the site of ribosome synthesis and assembly.