translation.en: So, what we found is that an old mouse exposed to a young environment in this model called parabiosis, shows a younger brain -- and a brain that functions better.
translation.zh: 因此，我们发现， 将老年老鼠置于年轻环境之中， 这一模型被称为连体共生， 它的大脑变得年轻了—— 功能也变得更好。