They used a high dose of antibiotic to kill the native gut bacteria and then fed those mice fecal material from a protected strain.
他们用高剂量的抗生素来杀死易得病小鼠肠道里原生的细菌，然后从其他受保护的小鼠身上获取得的排泄物来喂那些小鼠。
Using techniques similar to those involved in DNA fingerprinting, they then looked for the presence of antibiotic-resistant genes - and found these in high concentrations.
他们运用类似DNA指纹识别的技术，寻找抗药性的基因的存在，并在高浓度季铵盐存在下找到了它们。
The team then exposed the mice to Citrobacter. One antibiotic had no obvious effect.
该研究小组揭示了小鼠对柠檬宿杆菌的反应，一种抗生素没有明显的作用。
They then isolated infection-fighting white blood cells and extracted antibiotic proteins.
然后他们分离对抗感染的白细胞，并提取抗生素蛋白。
Unfortunately, in the decades since then, the overuse of antibiotics has led to antibiotic-resistant superbugs.
不幸的是，之后数十年间，滥用抗生素已导致具抗药性的超级病菌出现。
This resin, which has strong antibiotic properties, is gathered by bees which then metabolise it and smear it over the walls of their hive.
该树脂，具有很强的抗菌性能，是所收集的蜜蜂，然后新陈代谢，并涂到了墙上自己的蜂巢。
This resin, which has strong antibiotic properties, is gathered by bees which then metabolise it and smear it over the walls of their hive.
该树脂，具有很强的抗菌性能，是所收集的蜜蜂，然后新陈代谢，并涂到了墙上自己的蜂巢。
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