![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
High endothelial venules
High endothelial venules are surrounded by diffuse lymphoid tissue in this section of lymph node. The cuboidal epithelium lining these venules distinguishes them from normal postcapillary venules. The venule to the right is cut in longitudinal section. 400x
![High endothelial venules <p>High endothelial venules are surrounded by diffuse lymphoid tissue in this section of lymph node. The cuboidal epithelium lining these venules distinguishes them from normal postcapillary venules. The venule to the right is cut in longitudinal section. 400x</p>](https://digitalhistology.org/wp-content/uploads/2017/11/Or.Ly_.Tiss-17-1-ping.png)
High endothelial venules
High endothelial venules are surrounded by diffuse lymphoid tissue in this section of lymph node. The cuboidal epithelium lining these venules distinguishes them from normal postcapillary venules. The venule to the right is cut in longitudinal section. 400x
![Cuboidal endothelial cells <p>High endothelial venules are surrounded by diffuse lymphoid tissue in this section of lymph node. The cuboidal epithelium lining these venules distinguishes them from normal postcapillary venules. The venule to the right is cut in longitudinal section. 400x</p>](https://digitalhistology.org/wp-content/uploads/2017/11/Or.Ly_.Tiss-17-2-ping.png)
Cuboidal endothelial cells
High endothelial venules are surrounded by diffuse lymphoid tissue in this section of lymph node. The cuboidal epithelium lining these venules distinguishes them from normal postcapillary venules. The venule to the right is cut in longitudinal section. 400x
![Diffuse lymphoid tissue <p>High endothelial venules are surrounded by diffuse lymphoid tissue in this section of lymph node. The cuboidal epithelium lining these venules distinguishes them from normal postcapillary venules. The venule to the right is cut in longitudinal section. 400x</p>](https://digitalhistology.org/wp-content/uploads/2017/11/Or.Ly_.Tiss-17-3-ping.png)
Diffuse lymphoid tissue
High endothelial venules are surrounded by diffuse lymphoid tissue in this section of lymph node. The cuboidal epithelium lining these venules distinguishes them from normal postcapillary venules. The venule to the right is cut in longitudinal section. 400x