In Brief This Week: Quest Diagnostics; DNA Genotek; Heart Genomics | GenomeWeb

NEW YORK (GenomeWeb News) – The stock of Quest Diagnostics this week was downgraded by Zacks Equity Research to Underperform. In a statement, the investment research and information firm noted a drop in Quest's revenues and earnings-per-share for continuing operations in the fourth quarter, as well as a "disappointing outlook" for the first quarter of 2013.

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In PNAS this week: variation patterns in wheat lines, regulatory variation in Capsella grandiflora, and more.

A Rockefeller University researcher is using edited ants to explore complex biological systems, the New York Times writes.

There's a heritable aspect to how much time people spend online, the Los Angeles Times reports.

Stat News reports that Joseph Gulfo is another contender for FDA commissioner.