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: Unknown
[{'content': 'Nonprofessional antigen presenting cell is A/E - \nSelect and explain. \nA. Endothelial cell, B. Epidermal cell, C. Fibroblasts, D. Red blood cells', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Red blood cells Non-professional antigen presenting cello A non-professional APC does not constitutively express the Major Histocompatibility Complex class II (MHC class II) proteins required for interaction with naive T cells; these are expressed only upon stimulation of the non- professional APC by certain cytokines such as IFN-g.o All nucleated cells express the Major Histocompatibility Complex class I necessary to be considered a non- professional APC.o As erythrocytes do not have a nucleus, they are one of the few cells in the body that cannot display antigens.", 'role': 'assistant'}]