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Researchers Develop Spray-On, DNA ‘Barcode’ for Food

Researchers at Lawrence Livermore National Laboratory (LLNL) and a startup firm have developed a spray that can allow contaminated food to be traced back to its source within an hour.

Researchers at Lawrence Livermore National Laboratory (LLNL) and a startup firm have developed a spray that can allow contaminated food to be traced back to its source within an hour.