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
[{'content': 'MHC II are presented by -a) Macrophageb) Dendritic cellsc) Lymphocytesd) Eosinophilse) Platelets \nSelect and explain. \nA. ab, B. abc, C. acd, D. bcd', 'role': 'user'}, {'content': 'Answer: B \nExplanation: MHC II is expressed on : - B cells(B lymphocytes), langerhans cells, dendritic cells, macrophages, T cells (T lymphocytes), epithelial cells of thymus.', 'role': 'assistant'}]