What's the real lesson from a recent sting operation that revealed that more than 150 open-access publishers readily accepted a spoof manuscript for publication? Not that open access publishing is inherently flawed, according to Public Library of Science founder Mike Eisen, but that "peer review is a mess."

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In PLOS this week: phylogenetic study of hepatitis E viruses in Swedish moose, recombination sites in the honeybee genome, and more.

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

A retrovirus that's been integrated into the human genome appears to have a role in embryonic development, researchers report.

A report from MIT identifies areas of scientific research where declining research support is hindering needed advances.