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Scientists have engineered a bacteria with a genetic 'kill switch'

"This device will self-destruct in 10 seconds: 10...9...8...7..." How many times have you seen that in an action or sci-fi thriller? Can you imagine that scenario involving bacteria? If not, it may be time to start: genetic engineers have created strains of bacteria designed to die on their own in the absence of a synthetic compound that does not exist anywhere in nature.

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