At the Wall Street Journal's Health Blog, Sarah Rubenstein wonders why Howard Dean is a long-shot choice for the Health and Human Services top job. She says that Dean's problem is not his credentials -- he's doctor who as governor of Vermont revamped the state's health insurance system -- but rather his personality conflicts.

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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.