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Investigators at Duke University report in a PNAS paper published online in advance this week on their use of human artificial chromosome assembly assays, with which they show that "both D17Z1 and D17Z1-B can support de novo centromere assembly independently." This study, the authors say, illustrates the "presence of centromeric epialleles on an endogenous human chromosome" and points to the "genomic complexities underlying the mechanisms that determine centromere identity in h

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An analysis of blood donations suggests SARS-CoV-2 was present in the US weeks earlier than thought, according to NPR.

The Guardian reports that DeepMind Technologies' AlphaFold can predict how proteins fold.

CNBC reports that a US Centers for Disease Control and Prevention advisory panel is to vote on how to distribute COVID-19 vaccines.

In PNAS this week: targeting progesterone signaling in ovarian cancer, LINE-1 retrotransposition events in adenocarcinomas, and more.