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
All of these are antigen presenting cells except 
Select and explain. 
A. Follicular Dendritic Cells, B. Microflod Cells, C. Mast Cells, D. Langerhans Cells
B: Microflod Cells
Answer: B: Microflod Cells 
Explanation: None