![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Venule
The characteristics of a venule can be identified in this electron micrograph: a wide lumen surrounded by a layer of endothelial cells and no additional tunics. While capillaries and small venules have a similar appearance, the wall of the venule is composed of multiple endothelial cells. 2500x
![Endothelial cell nuclei <p>The characteristics of a venule can be identified in this electron micrograph: a wide lumen surrounded by a layer of endothelial cells and no additional tunics. While capillaries and small venules have a similar appearance, the wall of the venule is composed of multiple endothelial cells. 2500x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.CV_.V.V-3-1-ping.png)
Endothelial cell nuclei
The characteristics of a venule can be identified in this electron micrograph: a wide lumen surrounded by a layer of endothelial cells and no additional tunics. While capillaries and small venules have a similar appearance, the wall of the venule is composed of multiple endothelial cells. 2500x
![Sites of endothelial cell contact <p>The characteristics of a venule can be identified in this electron micrograph: a wide lumen surrounded by a layer of endothelial cells and no additional tunics. While capillaries and small venules have a similar appearance, the wall of the venule is composed of multiple endothelial cells. 2500x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.CV_.V.V-3-2-ping.png)
Sites of endothelial cell contact
The characteristics of a venule can be identified in this electron micrograph: a wide lumen surrounded by a layer of endothelial cells and no additional tunics. While capillaries and small venules have a similar appearance, the wall of the venule is composed of multiple endothelial cells. 2500x