NEW YORK (GenomeWeb News) – Bio-Rad Laboratories said today it has received a No Objection Letter from the US Department of Agriculture Food Safety and Inspection Service for its iQ-Check real-time PCR method for detecting Shiga toxin-producing Escherichia coli (STEC) bacteria in beef.

In June, USDA FSIS began testing for six new strains of STEC bacteria declared to be adulterants in beef trim, in addition to the E. coli O157:H7 strain that was already regulated.

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

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

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.