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Leaving a Lasting Mark

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. This suggest that childhood abuse lastingly affects the brain.

The Scan

Missed Early Cases

A retrospective analysis of blood samples suggests early SARS-CoV-2 infections may have been missed in the US, the New York Times reports.

Limited Journal Editor Diversity

A survey finds low diversity among scientific and medical journal editors, according to The Scientist.

How Much of a Threat?

Science writes that need for a provision aimed at shoring up genomic data security within a new US bill is being questioned.

PNAS Papers on Historic Helicobacter Spread, Brain Development, C. difficile RNAs

In PNAS this week: Helicobacter genetic diversity gives insight into human migrations, gene expression patterns of brain development, and more.