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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Microsoft co-founder Paul Allen also contributed to brain research, NPR reports.

The New York Times reports on the shifting interpretations of what some genetic variants mean over time.

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MIT's Technology Review reports on Genentech's pursuit of personalized cancer vaccines.