The fingertips became by far the most bacterially contaminated.

指尖成为了迄今为止最容易被细菌附着的地方。

The researchers found that the bacterially boosted mice ventured out into the open twice as often as the control mice, which they interpreted to mean that these rodents were more confident and less anxious than those not fed Lactobacillus.

研究人员发现，喂食了李糖乳杆菌的小鼠更经常冒险进入敞开的隧道，而且次数是对照小鼠的两倍之多。他们的解释意味着这些啮齿类动物比那些没有喂食李糖乳杆菌的小鼠更有信心而且焦虑更少。