Pericytes are (AIPG 2011)
|A||Modified endothelial cells|
|B||Pluripotent cells lining the capillaries|
Pluripotent cells lining the capillaries
1. Pericytes are peri-endothelial cells around the capillaries and the smallest venules (postcapillary venules), where an adventitia is absent and there are no muscle cells.
2. Pericyte cytoplasm contains actin, myosin, tropomyosin and desmin, which suggests that these cells are capable of contractile activity. They also have the potential to act as mesenchymal (pluripotent) stem cells, and they participate in repair processes by proliferating and giving rise to new blood vessel and connective tissue cells.