A cell consists of a mass of protoplasm, generally enclosed in a cell membrane, and containing a nucleus and nucleolus.
The nucleus of the egg-cell is distinguished as the germinal vesicle, and its nucleolus as the germinal spot.
The element x is present, but the nucleolus has disappeared.
Spermatogonium, showing chromatin element (x) associated with a nucleolus (n).
Possibly the nucleolus is the Supra- and Subconscious element.
This body is called the nucleus of the cell, and the small one within it, the nucleolus.
As yet the two natures and functions of the nucleus and nucleolus are by no means cleared up.
Within the nucleus there was often a small dark spot or sphere—the nucleolus.
nucleolus: the small portion of matter in the nucleus most readily affected by staining fluids.
It is formed of a mass of naked protoplasm (a), containing in its interior a nucleus (b), within which there is a nucleolus (c).
nucleolus nu·cle·o·lus (nōō-klē'ə-ləs, nyōō-)
n. pl. nu·cle·o·li (-lī')
A small, typically round granular body composed of protein and RNA in the nucleus of a cell, usually associated with a specific chromosomal site and involved in ribosomal RNA synthesis and the formation of ribosomes.
Plural nucleoli (n-klē'ə-lī')
A small, typically spherical granular body located in the nucleus of a eukaryotic cell, composed largely of protein and RNA. When the cell is not undergoing division, loops of DNA from one or more chromosomes extend into the nucleolus and direct the synthesis of ribosomal RNA and the formation of ribosomes. The ribosomes are eventually transferred out of the nucleus via pores in the nuclear envelope into the cytoplasm.