One lot were fed a special broth containing Lactobacillus rhamnosus, a gut-dwelling bacterium often found in yogurt and other dairy products.

一组以一种在酸奶和其它乳制品中经常 发现的含乳酸杆菌属鼠李糖乳杆菌（学名为Lactobacillus rhamnosus）的特别液体培养基喂食。