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In an advance, online publication of Nature this week, researchers report that microRNAs 165 and 166 differentially distribute "target mRNAs in the vascular cylinder determines xylem cell types in a dosage-dependent manner." This, the team writes, is itself mediated by the cell-to-cell movement of the transcription factors Short Root and Scarecrow.

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The Lancet has made changes to its peer-review process in response to its recent retraction of a COVID-19-related paper, Science reports.

The New York Times reports that a series of emails show how Department of Health and Human Services officials sought to silence the Centers for Disease Control and Prevention.

A new initiative aims to move Australia's genome sequencing labs onto one system, the Sydney Morning Herald reports.

In PLOS this week: recessive mutation tied to early-onset dilated cardiomyopathy, epigenetic analysis of lung adenocarcinoma, and more.