"Kill Switch" Prevents Spread of Genetically Modified Bacteria

As genetically-modified microbes take on ever more tasks – from creating new pharmaceuticals to turning out clean fuel sources – researchers have searched for a way to biologically isolate them from their wild counterparts, so that if they were ever accidentally released, they wouldn’t be able to survive.

Now, scientists releasing two separate papers in the journal Nature think they have a solution. They unveiled two different approaches to modifying a strain of E. coli to make it depende

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