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: Microbiology
[{'content': 'Following is the marker of HIV infection in blood - \nSelect and explain. \nA. Reverse Transcriptase, B. DNA polymerase, C. RNA polymerase, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a', i.e., Reverse Transcriptase . Plasma level HIV R1VA can be measured by reverse - transcriptase polymerase chain reaction, (-PCR) or branched DNA assay (b DNA) . Other markers of HIV infection: p24 antigen - Double stranded DNA", 'role': 'assistant'}]