Biologists who have been obtaining DNA sequences online from companies will soon have a more convenient option: benchtop machines that can print all the DNA they need. But this technology brings with it new risks by circumventing how synthetic biology companies now screen for would-be bioterrorists. A report released yesterday by a Washington, D.C., think tank urges companies and governments to revamp existing screening to prevent someone with malign motives from making a toxin or pathogen.
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