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This Week in PNAS

In the early, online version of the Proceedings of the National Academy of Sciences, a team from Switzerland and the US present a genome-scale analysis of gene deletion effects on metabolic networks in 55 bacteria from nine species, including 46 Escherichia coli strains and two strains of Shigella.

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There's increasing genetic evidence that a number of ancient hominins may have contributed to the human gene pool, according to Discover's The Crux blog.

In Cell this week: messenger RNA expression and translation, RNA localization atlas, and more.

Three genetic testing companies form a coalition to influence how Congress considers genetic privacy, The Hill reports.

University of California, San Diego researchers investigate how skin care products influence the skin microbiome, Scientific American reports.