This Week in PNAS

In an online, early PNAS article, researchers led by Pascal Hersen from the Centre National de la Recherche Scientifique and Université Paris Diderot in France present a method to monitor and control gene expression at the single-cell and population levels over a number of generations.

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The UK's Human Fertility and Embryology Authority calls for consumer genetic testing companies to warn customers that testing could uncover family secrets, according to the Guardian.

The New York Times reports that United Nations delegates have been discussing how to govern the genetic resources of the deep sea.

Researchers have transplanted edited cells into mice that appear to combat cocaine addiction, New Scientist reports.

In PNAS this week: analysis of proteolytic enzymes secreted by circulating tumor cells, phylogenetic study of Fv1 evolution, and more.