This Week in PNAS

In this week's PNAS Early Edition, investigators describe the intestinal microbiome of a premature infant, in which they characterized "strain-level genomic divergence during the first three weeks of life." During colonoziation, the team identified three compositional phases, and in addition, genotypic variation that could be "responsible for divergent strain ecologies, including hotspots of sequence variation in regulatory genes and intergenic regions, and in genes involved in trans

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The Jackson Laboratory has filed a complaint accusing Nanjing University of breeding and re-selling its mouse models, the Hartford Courant reports.

Oxford researchers are turning to virtual reality to visualize genes and regulatory elements, Phys.org says.

In Science this week: neutrophils rely on microRNA to protect against lung inflammation, and more.

China is moving forward with plans to sequence a million citizens, the Wall Street Journal reports.