Scientists have long known that the skin of frogs contains plenty of powerful germ-fighting substances because of the hostileenvironments they exist in.

科学家很久以前就知道，由于生存环境恶劣，青蛙的皮肤中含有大量能够对抗微生物的物质。

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The immune system has a hard time recognizing and fighting cancer because the enemy is not an invading germ but our own cells gone rogue.

由于癌细胞本身不是外部侵入的病菌，而是人体自身的问题细胞，因此免疫系统很难对癌细胞识别和清除。

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Germ-fighting fixes include inclining patients' beds, disinfecting their mouths and using drugs to prevent ulcers that could cause stomach bacteria to infiltrate the lungs.

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Who knew germ-fighting could sound like a bedtime story.

CNN: Germ warfare moves to the gym

News of MSRA spreading at gyms apparently has taken gym-germ fighting up a notch.

CNN: Germ warfare moves to the gym