This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Pericytes, which are seen in the capillary bed are: 
Select and explain. 
A. Modified endothelial cells, B. Phagocytes, C. Pluripotent cells lining the capillaries, D. None of the above
C: Pluripotent cells lining the capillaries
Answer: C: Pluripotent cells lining the capillaries 
Explanation: Pericytes are closely associated with capillaries. It is most commonly found at the venous end of capillary bed, and also extend onto the post capillary venules. They can differentiate into smooth muscle cells during blood vessel growth and during repair after injury to a vessel. They also act as contractile cells and can affect blood flow through the capillary. Pericytes have histologic characteristics of both smooth muscle cells and endothelial cells. Ref: NMS Histology, 3e, Page 179