This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pathology
[{'content': 'Glial fibrillary proteins are present in: \nSelect and explain. \nA. Astrocytoma, B. Meduloblastoma, C. Ependymoma, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: CNS is composed of Neurons and Glial cells. Glial cells in CNS include Oligodendrocytes Astrocytes Ependymal cells Meningothelial cells Microglia Hence, Glial fibrillary proteins are present in tumors of all these cells.', 'role': 'assistant'}]