The specialized cell type involved in the entry of lymphocytes into lymph nodes

The specialized cell type involved in the entry of lymphocytes into lymph nodes are called ____________.

1. M-cells

2. Mesangial cells

3. HEV endothelial cells

4. Selectins

Correct Option: Option C,

HEV endothelial cells

---

The high-walled endothelium of the post-capillary venules (HEV) in lymph nodes express vascular addressins which are recognized by homing receptors on lymphocytes passing through the afferent lymphatics and which mediate entry of the lymphocytes into the lymph nodes.