Without that knowledge, the researchers cannot determine which has a greater influence on gut inflammation, the microbes that are present or the microbes that are absent, said Arianna Celis Luna, a microbiologist at Stanford University who was not involved in the study. Perhaps bad actors are seeding destruction in the gut, or maybe this intestinal community lacks benign bacteria that could counteract these harmful effects. Finding a humane way to transfer bacteria from healthy children, or from children who can recover from malnutrition through diet alone, into mice may help tease apart those differences, Dominguez Bello said.
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