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This Week in Cell

In a Cell paper published online in advance this week, an international team led by investigators at Children's Hospital Boston shows that "the RNA exosome targets the AID [activation-induced cytidine deaminase ] … to both strands of transcribed duplex DNA substrates." More specifically, the authors write, the RNA exosome "accumulates on IgH switch regions in an AID-dependent fashion," a process that is "required for optimal" class switch recombination.

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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.