Shares in Sequenom and Affymetrix rose 5.8 percent and 5.1 percent, respectively, to lead gainers in the BCW Index for the four-day trading week ended Tuesday. There was no trading in the US on Monday due to the Memorial Day holiday. It was the second week in a row that Sequenom posted a significant increase in its share price.
 
Caliper Life Sciences led the 17 stocks that declined for the trading period, falling 5.8 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.