Case Closed

In releasing a 92-page report on Friday, the US Federal Bureau of Investigation closed its investigation into the 2001 anthrax case, reports the New York Times. The FBI concludes that the attacks were carried out by Army biodefense researcher Bruce Ivins, who killed himself in 2008. The bureau theorizes that the notes included with the anthrax mailings contained coded messages based on DNA biochemistry.

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US News & World Report writes that genetic testing of lung tumors can help identify treatments for patients.

A team of researchers plans to sample Loch Ness for environmental DNA, according to Newsweek.

The New York Times writes about the appearance of mosaicism in healthy people.

In PNAS this week: insecticide resistance patterns Anopheles gambiae mosquito, transcriptome patterns in Pseudomonas aeruginosa during infection, and more.