At Scientific American, Melinda Wenner interviews Jeremy Nicholson, a metabolomics expert, who now heads the department of biomolecular medicine at Imperial College London. Nicholson talks about how important metabolites are, especially gut microbes, in systems biology research and for finding new drug targets. "Almost every sort of disease has a gut bug connection somewhere," he tells Wenner.

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The US Food and Drug Administration has new guidelines that enable some gene and cell therapies to undergo expedited review, according to the New York Times.

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