This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': 'All are mononuclear-macrophages except - \nSelect and explain. \nA. Histiocytes, B. Microglia, C. Kupfer cells, D. B-cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Macrophages take various forms (with various names) throughout the body (e.g., histiocytes, Kupffer cells, alveolar macrophages, microglia, and others), but all are pa of the mononuclear phagocyte system Reff: Ananthanarayan & Panikers textbook of microbiology 9th edition pg: 137', 'role': 'assistant'}]