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In the PNAS Early Edition this week, a trio of investigators at the National Institute of Environmental Health Sciences reports the crystal structure of a human DNA polymerase λ variant, which they say forms "a natural base-base mismatch with Watson-Crick-like geometry." This variant, the authors write, is "poised to misinsert dGTP opposite a template T," such that the resulting mismatch "has Watson-Crick geometry consistent with a tautomeric or ionized base pair, with the pH depende

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The New York Times reports that the US Food and Drug Administration has authorized Johnson & Johnson's SARS-CoV-2 vaccine.

Nature News writes that additional details about the UK plan for an agency to support high-risk, high-reward science are needed.

The Wall Street Journal writes new studies are giving glimpses into the origins of SARS-CoV-2.

In PLOS this week: analysis of Plasmodium population structure, qPCR assay to diagnose scabies, and more.