Shares in Bruker BioSciences rose more than 9 percent this past week following an upgrade by investment bank UBS on its stock from 'neutral' to 'buy.' The firm's shares gained 7.8 percent the previous week on news that it would acquire affiliated company Bruker Optics (see BioCommerce Week 4/19/2006). PerkinElmer and Stratagene led decliners for the tracking period, falling 3.72 percent and 3.21 percent, respectively.

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The Seattle Times writes that pharmacogenomics testing can help choose medications that may work best for people with depression.

Researchers report that deleting one gene from butterflies affects their wing coloration patterns, according to the Washington Post.

In PNAS this week: genome sequencing of weevil symbionts, retinoid X receptor deletion in lung cancer metastasis, and more.

Sequencing could help combat foodborne illnesses, according to a blog post by Food and Drug Administration officials.