This Week in PLOS

In an essay in PLOS Biology, a team from Cold Spring Harbor Laboratory argues that high-throughput DNA sequencing may offer a window into the connections between neurons in the mouse brain. The team outlines the nuts and bolts of its proposed sequencing-based method, dubbed "barcoding of individual neuronal connections," or BOINC.

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Senator Elizabeth Warren (D-Mass.) has released the results of a genetic ancestry analysis, the Boston Globe reports.

Thomas Steitz, who won the 2009 chemistry Nobel Prize for his ribosome work, has died, the Washington Post reports.

Retraction Watch's Ivan Oransky and Adam Marcus report that Harvard Medical School and Brigham and Women's Hospital have recommended that more than 30 papers from a former researcher be retracted.

In PLOS this week: mechanisms for genes implicated in coronary artery disease, rumen microbes and host genetics influence cow methane production, and more.