NEW YORK (360Dx) – Roche on Tuesday said that its PD-L1 assay was approved by the US Food and Drug Administration as a complementary diagnostic for patients with locally advanced or metastatic urothelial carcinoma who are being considered for treatment with AstraZeneca's immunotherapy Imfinzi (durvalumab).

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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.