Researchers have found a link between the methylation state of rRNA genes in the hippocampus and suicide, reports The Scientist. People who committed suicide had highly methylated rRNA genes as compared to healthy brains, but only in the region that regulates stress hormones. The researchers, led by McGill University's Moshe Szyf, then compared the brains of suicide victims who had been abused as children to those who had not and found that the methylation patterns differed.

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Researchers have treated an X-linked genetic disease affecting three babies in utero, Stat News reports.

The Associated Press reports that the US Centers for Disease Control and Prevention is beefing up sequencing as a tool to investigate foodborne illnesses.

Researchers have sequenced samples from ancient toilets to study past eating habits and health, NPR reports.

In Nature this week: ash dieback disease fungal genome, and more.