This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': 'Southern blotting is used for - \nSelect and explain. \nA. RNA, B. DNA, C. Protein, D. Antibody', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., DNA Blotting techniques || | |Southern blottingNorthern blottingImmunoblottingorWestern blotting||For D.N.A.For R.N.A. |For antigen", 'role': 'assistant'}]