This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Antigen presentating cells are which of the following \nSelect and explain. \nA. Astrocytes, B. Endothelial cells, C. Epithelial cells, D. Langerhans cells', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref Robbins 9/e p195 epithelial and Langerhans cells is also the answer Professional antigen presenting cells(APCs) are immune cells that specialize in presentingan antigen to a T-cell. The main types of professional APCs are dendritic cells (DC), macrophages, and Bcells Other APC are endothelial cells, Langerhans cells, epithelial cells', 'role': 'assistant'}]