Hepatitis is a virus that specifically affects the liver, so viruses are often specific to certain kinds of cells.

肝炎是一种专门感染肝脏的病毒，所以病毒通常都有细胞特异性。

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A new study describes evidence of a hepadnavirus (a virus group that includes hepatitis b, which infects humans as well as other mammals and ducks) hiding in the genomes of modern songbirds.

基于一项新的研究结果，嗜肝病毒(包括乙肝在内的病毒群，作用于人类、哺乳动物和鸭子)潜伏在现代鸣禽的基因里。

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As these products move along the supply chain from the farm to the table, they can be contaminated by pathogens such as salmonella, e. coli, and hepatitis a virus.

这些产品在从农场到餐桌这一供应链的转运过程中，可能会受到诸如沙门氏菌、大肠杆菌和甲肝病毒等病原体的污染。

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The hepatitis A virus causes high body temperature,pain and weakness.

VOA: special.2010.11.16

Hepatitis is a virus that specifically affects the liver, so viruses are often specific to certain kinds of cells.

肝炎病毒就可以特异性的感染肝细胞,因病毒通常都有细胞特异性

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The hepatitis A virus can survive in sea water for a number of weeks - meaning these people could contract the disease if the local sea water has been contaminated.

BBC: Holiday makers fail to protect health

Cohen took the malaria surface protein used in Ballou's vaccine and fused it to a protein from the hepatitis B virus, creating a harmless particle that looked like a virus to the immune system.

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The 254-nanometer light kills the hardy waterborne polio virus, rotavirus (which causes vomiting, diarrhea and dehydration), the bacterium that causes cholera, the virus that gives rise to hepatitis A, and cysts of cryptosporidium (a nasty parasite).

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