At Bitesize Bio, blogger Suzanne gives some tips for getting lots of pure double-stranded DNA from a gel extraction. Her 10 suggestions include trimming off as much of the agarose gel as possible and minimizing the DNA's exposure to UV light or, instead, using methylene blue or crystal violet stains. For commercial silica spin kits, she advises heating the elution buffer and using the good ethanol.

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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.