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: Microbiology
MHC II are presented by -a) Macrophageb) Dendritic cellsc) Lymphocytesd) Eosinophilse) Platelets 
Select and explain. 
A. ab, B. abc, C. acd, D. bcd
B: abc
Answer: B: abc 
Explanation: MHC II is expressed on : - B cells(B lymphocytes), langerhans cells, dendritic cells, macrophages, T cells (T lymphocytes), epithelial cells of thymus.