NEW YORK (GenomeWeb News) – GenMark Diagnostics reported after the close of the market Tuesday that its second-quarter revenues increased 300 percent due to growth in its test menu and reagents sold.

The Carlsbad, Calif.-based molecular diagnostics firm brought in total revenues of $3.6 million for the three months ended June 30, compared to $901,000 for the second quarter of 2011. It beat the consensus Wall Street estimate of $3.1 million.

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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.