This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure and function of protein, Subject name: Biochemistry
[{'content': 'Molecular separation of two proteins with same charge can be done by \nSelect and explain. \nA. Ion exchange chromatography, B. Dialysis, C. Gel diffusion chromatography, D. Electrophoresis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Molecular separation of two proteins with same charge can be done by gel diffusion chromatography. Gel diffusion chromatography is the best method to differentiate proteins. Ref: Harper 28th Ed. Page-21-22, Harper 27th Ed. Page: 21-22', 'role': 'assistant'}]