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: Physiology
Which of the following does not form a filtration barrier in nephrons 
Select and explain. 
A. Podocytes, B. Mesangium, C. Endothelial cell, D. Basement membrane
B: Mesangium
Answer: B: Mesangium 
Explanation: Filtration barrier
-        Glomerular capillary endothelium
-        Basement membrane
-        The visceral epithelium of Bowman’s capsule with podocytes