New ‘interspecies communication’ strategy between gut bacteria and mammalian hosts uncovered

Bacteria in the gut do far more than help digest food in the stomachs of their hosts; they can also tell the genes in their mammalian hosts what to do. A study describes a form of ‘interspecies communication’ in which bacteria secrete a specific molecule — nitric oxide — that allows them to communicate with and control their hosts’ DNA, and suggests that the conversation between the two may broadly influence human health.

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