Kill switches shut down engineered bacteria

MIT-KillSwitch_0

To prevent genetically modified bacteria from escaping into the wider environment, researchers have developed safeguards in the form of two so-called “kill switches,” which they call “Deadman” and “Passcode.” These kill switches can cause synthetic bacteria to die without the presence of certain chemicals. Image: MIT News

Synthetic biology technique could make it safer to put engineered microbes to work outside the lab.

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