This story originally appeared in Biocommerce Week, a newsletter that has been discontinued.
Following the acquisition of two cell analysis businesses in the past month, PerkinElmer officials said last week that they are bullish on that market for 2007, though they expect both acquisitions to be neutral or slightly accretive to earnings this year. The firm also announced that its fourth-quarter 2006 revenues increased 10 percent year over year to $427 million.

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Magdalena Skipper, the incoming editor-in-chief of Nature, speaks with NPR's Weekend Edition Sunday.

Genetic genealogy has led to an arrest in another cold case, dating back to 1987.

In PLOS this week: mutation in second gene widens clinical symptoms of people with ADD3 mutations, comparative genomic analysis of Pseudovibrio, and more.

Wired reports that 23andMe is trying to bolster its outside collaborations.