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: Pathology
MHC II is present on 
Select and explain. 
A. Platelets, B. RBC, C. Macrophages, D. Endothelial cells
C: Macrophages
Answer: C: Macrophages 
Explanation: MHC I is present on all nucleated cells and platelets.
MHC is present on immune cells like Macrophage, Langerhans cells, B cells.