This Week in PLoS

In PLoS Genetics this week, researchers in the UK and New York have identified endogenous viral elements derived from 10 non-retroviral families using systematic in silico screening of animal genomes. "Integration into the nuclear genome of germ line cells can lead to vertical inheritance of retroviral genes as host alleles," the researchers write.

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

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

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