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Cloak and Dagger

A new study published in Nature Chemical Biology shows that bacteria can "go undercover" to avoid antibiotics — not by mutating, but by disguising themselves, says 80beats' Veronique Greenwood. When antibiotics are administered, they activate a stress response in bacteria that unleashes a toxin.

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Bloomberg reports that the DNA-for-cash deal reported in Kentucky might be a more widespread scam.

St. Jude Children's Research Hospital scientists have treated infants with X-linked severe combined immunodeficiency using gene therapy in an early phase study.

St. Louis Public Radio reports that some African Americans are turning to DNA ancestry testing to help guide genealogical searches.

In Nature this week: a genomic analysis of the snailfish Pseudoliparis swirei, ancient DNA analysis gives insight into the introduction of farming to England, and more.