
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
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
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
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