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In early online publication, scientists found that in Arabidopsis thaliana, regions of DNA methylation are deficient in histone variant H2A.Z. Mutation of the MET1 DNA methyltransferase, which causes both losses and gains of DNA methylation, leads to opposite changes in H2A.Z deposition, whereas mutation of the PIE1 subunit of the Swr1 complex that deposits H2A.Z leads to genome-wide hypermethylation.

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SARS-CoV-2 vaccine developers are evaluating further vaccine doses as well as modified doses to keep up with new viral variants, according to CNN.

The New York Times reports that a new viral variant of concern has been identified in New York City.

In Nature this week: spatiotemporally resolved map of the human cell cycle, folding single-cell RNA sequencing into cancer drug studies, and more.

According to BBC News, the global vaccine-sharing initiative has sent its first shipment, which arrived in Ghana this week.