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': 'Neutrilization test is \nSelect and explain. \nA. Widal test, B. Weil-Felix test, C. Paul Bunnel test, D. Nagler reaction', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `d' i.e., Nagler reaction Neutralization reaction When antibody reacts with a toxin or other biologically active antigen, it may neutralize the effect of toxin or antigen. This ability to used in neutralization test. Neutralization tests are of two types", 'role': 'assistant'}]