Studies show that two species of Bifidobacterium and one of Lactobacillus each reduce stress.

研究表明，两种双歧杆菌和一种乳酸菌各自可以减轻压力。

Levels of Bifidobacterium, meanwhile, have gone up still further-being five times higher than they had been at the beginning of the study.

同时双歧杆菌的含量仍进一步提升—比研究之初高五倍。

In a trial on germfree mice, an abnormal stress response was reversed when they were given oral doses of Bifidobacterium infantis.

在对无菌小鼠进行的一项试验中，当给小鼠口服婴儿双歧杆菌时，异常的应激反应被逆转。