This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cell Membrane and transpo protiens, Subject name: Physiology
[{'content': 'Which is not an intermediate filament? \nSelect and explain. \nA. Desmin, B. Vimentin, C. Tubulin, D. Keratin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Intermediate filaments - resist external pressure cell type specific: used as cellular markers Types Nuclear(Lamin-A,B,C) Vimentin like (Vimentin, desmin, GFAP, peripherin) Epithelial(Types 1,2 keratin) Axonal( Neurofilament proteins- NF-L,M,H)', 'role': 'assistant'}]