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': 'Northern blotting used in separation and diagnosis of: \nSelect and explain. \nA. Histones, B. Proteins, C. RNA, D. DNA', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: (c) RNARef: Ananthanarayan and Paniker, 9th edition, Page 65Southern blotting - DNANorthern blotting - RNAWestern blotting - ProteinsMnemonic: North India - Roti; South India - Dosa; Western countries- Pizza (R-RNA; D-DNA; P-Proteins).', 'role': 'assistant'}]