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This Week in PNAS

In a paper published online in advance in PNAS this week, a team led by investigators at the US Department of Agriculture shows that "overexpression of the maize Corngrass1 microRNA prevents flowering, improves digestibility, and increases starch content of switchgrass." The researchers show that several greenhouse and field grown plants into which the Cg1 gene was transferred showed up to 250 percent more starch and "a complete inhibition of flowering."

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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.