This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Western blot is used for ? \nSelect and explain. \nA. DNA, B. RNA, C. Sugar, D. Protein', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., ProteinVisualization of a specific DNA or RNA fragment among the many thousand of contaminating molecules requires the convergence of number of techniques collectively termed the blot transfer.", 'role': 'assistant'}]