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 epithelial cells is \nSelect and explain. \nA. Keratin, B. Vimentin, C. Desnin, D. Lamin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Intermediate filaments are used as tumor markers Epithelial cells:keratin Muscle cells:desnin Nucleus:lamin Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:8,9,14', 'role': 'assistant'}]