NEW YORK (GenomeWeb News) – Goldman Sachs today downgraded Agilent Technologies and Genomic Health, but upgraded Waters.

The changes to the three firms' ratings are part of a "recalibrating" of the investment bank's Life Science Tools portfolio in light of tighter credit in China and an "underappreciated risk" of renewed austerity as the US Fiscal Year 2014 budget and debt ceiling "come back into focus," analyst Isaac Ro said in a research report.

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In PNAS this week: genomic study of group B Streptococcus evolution, selection on the X chromosome in great apes, and more.

Changing the fat and fiber content of people's diets affects their gut microbiome, metabolome, and colon cancer risk, researchers say.

Broken links are found throughout academic publications, and some services are trying to combat such link decay.

Nick Stockton at Wired says that a pause in studying genome-editing tools should be used to find a path forward.