And bacteria, primitive forms of life, have been seen there.

细菌——一种原始的生命形式——在那里被发现。

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Was there a sudden change in the viruses and bacteria around?

周围的病毒和细菌是否突然发生了变化？

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The Royal Swedish Academy says the DNA in cells contains the designs for how people, plants and bacteria look and operate.

VOA: special.2009.12.08

So, not just a spectrum of viruses, but there's viruses and bacteria and parasites and other microorganisms that can cause disease.

所以,不是只有病毒,还有病毒,细菌,寄生虫,和其它各种微生物都能导致疾病

耶鲁公开课 - 生物医学工程探索课程节选

The study of immunology is the study of mechanisms that your body uses to protect itself from mainly from foreign pathogens like viruses and bacteria.

免疫学研究身体,采用何种机制来保护自身,免受外源病原体如病毒和细菌的伤害

耶鲁公开课 - 生物医学工程探索课程节选

But polio is just one of many causes, with other viruses and bacteria also responsible.

BBC: Bill Gates: The world can defeat polio

Inside all animals, plants and bacteria are DNA molecules that contain the blueprint for life.

CNN: Chemistry Nobel honors research on life-giving ribosome

It houses millions of microorganisms and bacteria that exist for the sole function of eating dead things.

FORBES: Why Butchers Are Sexy And Cutting Meat Is An Art Form