A week after CEO Greg Lucier said that Invitrogen plans to expand its presence in the cell-analysis space, the firm announced this week that it has acquired two businesses to do just that.

Invitrogen acquired Quantum Dot and the BioPixels unit of BioCrystal for undisclosed sums, providing the firm with labeling and detection technologies that will add to the portfolio of its Molecular Probes unit and beef up its growing cell analysis business.

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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.