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: Medicine
[{'content': 'Which of the following is a strategy used to increase the yield of protein produced in recombinant protein synthesis? \nSelect and explain. \nA. Promoter induction, B. Genes for protease inhibitors, C. Translation initiation, D. Translation and transcription termination', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Genes for protease inhibitors Expression vector is a vector which synthesize/produce/express the protein coded by a gene introduced DNA recombination technology. So it is used to produce protein by genetic engineering and detect specific c-DNA molecules in library. Expression vectors are specially constructed so that they contain very active inducible promoters, proper in phase translation initiation codons, both transcription & translation termination signalsQ (to increase transcription & translation) and appropriate protein processing signals, if needed (to produce processed function protein). To enhance the final yield of protein product, some expression vectors even contain genes that code for protease inhibitorsQ.', 'role': 'assistant'}]