Other methods that may be employed include {HEAD ~ the use} of bacterial strains in which {TAIL ~ a gene encoding RNase} is stably introduced into the bacterial host genome or transiently expressed via a plasmid 
Other methods that may be employed include { HEAD ~ the use } of bacterial strains in which { TAIL ~ a gene encoding RNase } is stably introduced into the bacterial host genome or transiently expressed via a plasmid
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