The nucleolus shows an unstainable point at the centre known as the endonucleolus or nucleoluolus (Auerbach).
The nucleolus is elongated, and its longest measurement lies in the direction of the equatorial plane of the nucleus.
Cell in process of karyokinetic division with retention of the nucleolus during the division.
Division of the nucleolus and formation of nuclear plate.
Division of the nucleolus by elongation, construction, and equilateral division of the nucleus.
In the earlier accepted notion of direct segmentation, usually known as the schema of Remak, division was described as commencing in the nucleolus, as thereafter spreading to the nucleus, and as ultimately implicating the cell-substance.