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 are used as: \nSelect and explain. \nA. Tumor markers, B. Carbohydrates, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Intermediate filaments are used as tumor markers Epithelial cells have:keratin Muscle cells: desnin Connective tissue:vimentin Glial cells:GFAP Nucleus:lamin Ref:Guyton and Hall textbook of medical physiology 12th edition,page number 8,9,14', 'role': 'assistant'}]