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University of Pennsylvania scientists have shown that by deleting the gene encoding for CCR5, an HIV co-receptor that sits on the surface of T-cells, they made mice resistant to HIV infection. Their work, published in Nature Biotechnology this week, uses a zinc finger nuclease, which may offer hope for infected patients.

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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.