So you might be wondering whether we can also do this sort of thing across species, and it turns out that if you take microbes from an obese person and transplant them into mice you've raised germ-free, those mice will also become fatter than if they received the microbes from a lean person, but we can design a microbial community that we inoculate them with that prevents them from gaining this weight.
你也许会想知道这种影响 是否会跨物种， 结果表明，如果你从肥胖的 人身上提取微生物， 移植到无菌老鼠身上， 这些老鼠与从瘦的人 身上获得微生物相比会变得更胖， 但是我们可以设计一种微生物菌落， 把它们接种到防止增肥的微生物上。