When we take the microbes from an obese mouse and transplant them into a genetically normal mouse that's been raised in a bubble with no microbes of its own, it becomes fatter than if it got them from a regular mouse.
Si tomamos los microbios de un ratón obeso y los trasplantamos a un ratón genéticamente normal criado en una burbuja sin microbios propios, engorda más que si tuviera los de un ratón común.