Another spindle, showing three granules which are probably remains of nucleoli.
Highly refracting points or nucleoli were visible in their anterior.
At first no nucleoli are present in the daughter nuclei, but they appear before the division is complete.
Within the nucleus are often to be found one or two nucleoli with a relatively thick and deeply stained membrane.
The above mode of increase for the nucleoli appears to be exceptional.
The aberrant bodies in these figures are probably remains of the nucleoli; they are found only in iron-hæmatoxylin preparations.
Membrane of the nucleus thick, porous, on its inside with some nucleoli.
Partial rest stage between first and second maturation divisions, two nucleoli present.
These appearances probably indicate that nuclei, in which two nucleoli are present, are about to divide.
If, now, we add acetic acid, we discover also tolerably large nuclei with nucleoli.
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.