From left: Image of bacteria labeled with electrochemical markers, an electrochemical instrument to measure the data, and an image of the data displayed on a smartphone. News organizations may use ...

Then the team sequenced the bacterial DNA to retrieve the gif and the image, verifying that the microbes had indeed incorporated the data as intended. The results appear in Nature journal.

The U.S. Food and Drug Administration issued a warning letter, but not a recall, after microorganisms were found in water ...