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': 'Cy Bromide green dye is used for: \nSelect and explain. \nA. HLPR, B. PCR, C. ELISA, D. Immunofluorescence', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) PCR See below Cy Bromide green dye is a dye that binds to minor groove of double stranded DNA and generates fluorescence. Uses: To determine presence of amplified DNA product. For optimizing PCR reaction.', 'role': 'assistant'}]