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This Week in Science

In this week's Science, a Harvard University-led team reports a new imaging technique for examining the layout of chromatin in individual chromosomes. The approach enables direct imaging and tracing of numerous genomic regions in individual chromosomes in situ, allowing for single-molecule analyses of chromatin organization that had not previously been possible. The researchers demonstrate their technique to reveal a number of new principles of chromatin organization.

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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.