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': 'Most sensitive test for Treponoma: \nSelect and explain. \nA. VDRL, B. RPR, C. FTA-ABS, D. Kahn', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) FTA-ABS ' Most sensitive test for syphilis: FTA-ABS Most specific test for syphilis: TPI Note Treponemal test are likely to remain reactive even after adequate treatment and cannot differentiate past from current trepon mal infection.", 'role': 'assistant'}]