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': 'Intermediate filaments in glial cells are \nSelect and explain. \nA. Keratin, B. Desnin, C. GFAP, D. Bone', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Intermediate filaments are used as tumor markers GFAP is the intermediate filament present in glial cells, they are used to indicate astrocytoma Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:8,9,14', 'role': 'assistant'}]