![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Nucleolus
This neuron shows a euchromatic nucleus with a well-defined nucleolus. The nucleolus is the site of ribosomal RNA transcription and the initial assembly of ribosomes. Nuclei generally have one nucleolus; however, multiple nucleoli are common in highly active cells, such as liver cells. 1000x
![Nucleus <p>This neuron shows a euchromatic nucleus with a well-defined nucleolus. The nucleolus is the site of ribosomal RNA transcription and the initial assembly of ribosomes. Nuclei generally have one nucleolus; however, multiple nucleoli are common in highly active cells, such as liver cells. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.N-16-2-ping.png)
Nucleus
This neuron shows a euchromatic nucleus with a well-defined nucleolus. The nucleolus is the site of ribosomal RNA transcription and the initial assembly of ribosomes. Nuclei generally have one nucleolus; however, multiple nucleoli are common in highly active cells, such as liver cells. 1000x
![- Nucleolus <p>This neuron shows a euchromatic nucleus with a well-defined nucleolus. The nucleolus is the site of ribosomal RNA transcription and the initial assembly of ribosomes. Nuclei generally have one nucleolus; however, multiple nucleoli are common in highly active cells, such as liver cells. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.N-16-1-ping.png)
- Nucleolus
This neuron shows a euchromatic nucleus with a well-defined nucleolus. The nucleolus is the site of ribosomal RNA transcription and the initial assembly of ribosomes. Nuclei generally have one nucleolus; however, multiple nucleoli are common in highly active cells, such as liver cells. 1000x
![Nissl substance > <p>Nissl substance is a unique aggregation of rough endoplasmic reticulum and polysomes in neurons.</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.N-16-3-ping.png)
Nissl substance >
Nissl substance is a unique aggregation of rough endoplasmic reticulum and polysomes in neurons.
![Artifactual space > <p>During fixation, tissue shrinkage occurs; however, different components of the tissue shrink at different rates. This results in the formation of artifactual spaces which are not present in living tissue.</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.N-16-4-ping.png)
Artifactual space >
During fixation, tissue shrinkage occurs; however, different components of the tissue shrink at different rates. This results in the formation of artifactual spaces which are not present in living tissue.