This Week in Science | GenomeWeb

This Week in Science

In this week's Science, two independent research groups report data showing that RNAi interference is used by mammals to fend off viral pathogens, as well as to control levels of endogenous genes. In one study, investigators looked at undifferentiated mouse embryonic stem cells, which lack an interferon immune response system, and found an accumulation of RNAi molecules after viral challenge.

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In PLOS this week: genetic factors associated with facial features, a new mutation that makes individuals more prone to Brugada syndrome, and more.

Nutrigenomic companies offer gene-based diet advice, the Wall Street Journal reports.

Researchers have found a new kind of virus — one that starts out broken up into five parts.

Nature News explores the president's "science legacy."