The BCW Index gained 2 percent for the week ended Tuesday, as 15 of the 16 companies in the Index either gained ground or were flat for the period. The upswing was consistent with gains realized by tech stocks during the week.
 
Bruker Biosciences led gainers with a 5-percent increase, followed by PerkinElmer, which rose 4.4 percent. The only firm in the Index to lose ground for the trading period was Stratagene, whose shares dropped 8.5 percent.
 

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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.