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An article in Nature reports scientists have logged a year in the life of 14 babies' intestines, and found that our early gut microbes bear a legacy from our very first exposure to bugs, and this early bacterial colony could have a lasting impact on our guts. The article quotes Steven Gill, associate professor of oral biology, who led the research. "They co-evolved with us to provide functions that we can't provide for ourselves," he said. Go to article.