This Week in PLOS

In PLOS One, researchers from Estonia, the US, and Canada describe placental gene expression profiles that seem to be associated with complications such as preeclampsia or gestational diabetes during pregnancy. Using array-based approaches to look at the levels of around 47,000 transcripts in placental tissue from early or mid-gestation, the team tracked down more than genes showing transcriptional shifts at mid-gestation.

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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.