454 Life Sciences and its marketing partner, Roche Applied Science, announced last week that they had launched 454's new DNA sequencer, the first of a new wave of competing sequencing technologies expected to hit the market over the next year.

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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.