NEW YORK (GenomeWeb News) – Sigma-Aldrich today reported a 3 percent increase year over year in its second-quarter revenues as the company beat consensus analyst estimates on the top and bottom lines.

For the three months ended June 30, the company saw revenues climb to $681 million, compared to $664 million a year ago, and beating the average Wall Street estimate of $678.8 million.

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In PNAS this week: epigenetic changes linked with high-altitude pulmonary edema, transcriptome profiling of maize leaf development, and more.

Stanford University researchers are studying top athletes to uncover genes linked to performance.

The UW's Wylie Burke and Dartmouth's Gilbert Welch argue that whole-genome testing may do more harm than good, and a related poll.

Differences in DNA methylation could be used to distinguish between DNA samples obtained from identical twins, researchers say.