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': 'Paul bunnel reaction is a type of - \nSelect and explain. \nA. Agglutination, B. CFT, C. Precipitation, D. Flocculation test', 'role': 'user'}, {'content': "Answer: A \nExplanation: Paul - Bunnell test for diagnosis of infectious mononucleosis are heterophile agglutination test. When a paiculate antigen is mixed with its antibody in the presence of electrolytes at a suitable temperature and pH, the paicles are clumped or agglutinated. Reference : Anathanarayan & paniker's 9th edition, pg no:108, 109 <\\p>", 'role': 'assistant'}]