This Week in Science

In this week's Science, an international research team reports that certain gut microbes can influence the growth and spread of liver cancer, suggesting that the microbiome could be a target for therapeutic intervention for the disease. In mouse models of liver cancer, the team found that reducing commensal bacteria with antibiotics led to a reduction in the number of tumors — an effect associated with with an increase in activated liver natural killer cells.

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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.