NEW YORK (GenomeWeb News) – PerkinElmer reported after the close of the market Thursday that its fourth-quarter revenues rose 6 percent, while its bottom line was hit by a large asset impairments charge.

The Waltham, Mass.-based analytical tools firm brought in total revenues of $572.9 million for the three months ended Dec. 30, 2012, compared to $539.3 million for the fourth quarter of 2011, and up 3 percent on an organic basis. It beat Wall Street's estimate of $578.1 million.

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Two researchers have found that behavioral genetic defenses in criminal cases don't tend to affect outcomes, according to Popular Science.

Researchers report that while host genetics influence the oral microbiome, they don't appear to affect cavity-causing microbes, the Economist says.

Pandas' gut microbiomes change as what they eat changes with the seasons, writes Discover's Inkfish blog.

In PLOS this week: comparative genomic study of malaria-linked macaque parasite, search for apple root reference genes, and more.