She left so quickly because some virulent virus, only four days.
因为某种致命的病毒，只用了4天，她就走了。
The virus was proved to be a Duck Plague virus by means of cell culture, neutralization test and PCR assay, and it was maybe a virulent virus.
四川成都某鸭场分离得到一株疑似鸭瘟病毒，经细胞培养、中和实验、PCR鉴定，证明分离株为鸭瘟病毒，毒力测定及动物实验表明其可能为强毒株。
The results showed that the fusion protein can yield antibodies with high neutralizing activity as well as provide protection against challenge with virulent virus.
结果表明，用此融合蛋白的包涵体免疫豚鼠能诱导产生中和抗体，并对病毒的攻击提供免疫保护。
The virus did not mutate to a more virulent form.
病毒没有变异为致命性更强的形态。
It remains to be seen whether the virus will mutate into a more virulent strain.
该病毒是否会产生变异，成为毒性更强的病毒株，仍有等观察。
If that evolution makes the virus more virulent, so much the worse for the host.
如果这种演变使得病毒毒性大增，寄主体质就会进一步遭到削弱。
Cyber threats continued to dominate the headlines in 2010 when a virulent Stuxnet virus targeted the personal computers of employees at Iran's first nuclear power station.
网络威胁仍然占据着2010年的报纸头条，恶毒的“超级工厂”病毒这次的目标是伊朗第一座核电站雇员们的个人电脑。
Studies have detected no signs that the virus has mutated to a more virulent or lethal form.
经研究未发现迹象说明病毒已突变为更具毒性或更致命的形式。
At present, most swine flu infections are mild, and the severity of the present pandemic does not come close to the 1918 flu, but experts worry that the new virus could become more virulent over time.
目前大部分的猪流感病例都很轻微，这次大流行的严重程度远远低于1918年流感，然而专家们担心新型流感的毒力会越来越强。
Dog, mink distemper, dog tiny virus and so on virulent diseases.
犬、水貂的犬瘟热、犬细小病毒等病毒性疾病。
Avian broilers were used as experimental objects to study the mechanism of the pituitary adrenal axis regulating immune system when being infected with virulent infectious bursal disease virus (IBDV).
以艾维茵肉鸡为试验动物，研究了垂体肾上腺轴在传染性腔上囊病病毒(IBDV)强毒株攻击时对免疫系统的调节作用。
Wouk kind of virus gastroenteritis astroid virulent gastroenteritis.
诺沃克类病毒胃肠炎星状病毒性胃肠炎。
Ultrathin sectioning and transmission electron microscopy of infected duck embryo fibroblasts (DEF) were employed to investigate the morphology of virulent duck enteritis virus (DEV) strain CH.
通过超薄切片和透射电子显微镜技术对鸭病毒性肠炎病毒(DEV)CH强毒株在鸭胚成纤维细胞(DEF)中的形态结构进行了研究。
The characteristic clinical symptoms and pathological changes of goatpox were found in all goats inoculated virulent goatpox virus.
接种山羊痘强毒的山羊都发生山羊痘的典型临床症状和病理变化。
After little more than an informal examination, the doctor concluded that Mr. Malcolm Smith's organism was infested with a particularly virulent strain of the influenza virus.
做完非正式的检查后，医生得出结论，马尔科姆·史密斯的机体大量滋生了一种非常致命的流感病毒。
The virus is high virulent, and it can lead to100% mortality of shrimp during a week under high temperature.
该病毒有很强的致病性，高温期间通常一周左右即可造成100％的个体死亡。
According to WHO experts, there are currently no signs that the H1N1 virus has mutated to a more virulent or lethal form.
WHO的专家指出，当前没有迹象表明H1N1病毒已经变异成毒性更强更致命的形式。
The results demonstrates that two isolates are high virulent Newcastle disease virus.
结果表明：这两株分离株均为新城疫强毒株。
This virus was both lethal and virulent.
这种病毒不但致死率高，而且毒性极强。
Nuowoke kind of virus gastroenteritis intestinal glands virulent Jia Changyan.
诺沃克类病毒胃肠炎肠腺病毒性贾肠炎。
In order to study the attenuation of neurovirulence of SA14 14 2 attenuated vaccine virus, monkeys and mice were tested with the strain and its parent SA14 virulent strain.
为了解乙型脑炎（乙脑）减毒活疫苗弱毒株SA14142神经毒力的减弱程度，本文对弱毒株及其原株SA14强毒株进行了猴体和小白鼠的致病性和病理学变化的比较试验。
The virulent H5N1 avian flu virus spread across much of Asia from late 2003, causing the death or culling of more than 100 million fowl.
这种致命的H5N1禽流感病毒于2003年底席卷了亚洲大部分地区，导致超过1亿的家禽死亡或被扑杀。
Therefore, the NS1 protein is regarded as a crucial virulent factor for Avian Influenza Virus.
NS1蛋白因此被认为是禽流感病毒的一个重要毒力因子。
Tests on chickens and mice show that avian flu H5N1 virus isolated from ducks in 2004 is more virulent and harmful to mammals than in recent years.
在雏鸡和小鼠进行的实验显示，2004年从鸭身上分离出的H5N1病毒同今年其他病毒相比，毒力更强，对哺乳动物危害更大。
This virus was both lethal and virulent.
这种致病的病毒尚待查明。
This virus was both lethal and virulent.
这种致病的病毒尚待查明。
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