This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enterobecteriaceae, Subject name: Microbiology
[{'content': 'Widal test is - \nSelect and explain. \nA. Slide flocculation test, B. Immunodiffusion, C. Tube precipitation, D. Tube agglutination', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Tube agglutination Agglutinationo When a particulate antigen is mixed with its antibody in the presence of electrolytes at a suitable temperature and pH, the particles are clumped or agglutinatedo Agglutination is more sensitive than precipitation for the detection of antibodies.Agglutination tests|||||Slide agglutinationTube agglutinationCoombs testPassive agglutination testo Blood grouping and cross - matchingo Widal testo Weil - felix reactiono Paul Bunnell testo Cold agglutination testo Streptococcus MG agglutination testo Anti - Rh antibody test||||| Haemagglutinationo Rose Waaler test for R. A.Latex agglutinationo Detection of: ASO CRP RA factor HOG", 'role': 'assistant'}]