Virulence test showed the isolate was highly virulent(LD50=5×103CFU).
毒力试验显示，分离株对小鼠的LD50为5×103CFU,具有很强的致病性。
参考来源 - 噪鹛嗜水气单胞菌的分离与鉴定 ISOLATION AND IDENTIFICATION OF AEROMONAS HYDROPHILA FROM LAUGHING THRUSHESA lack of correlation between the virulence and RAPD dissimilarity matrices was observed, indicating the independence of DNA polymorphism from virulence diversity.
结果表明，DNA多态性与毒性多态性之间没有相关性。
参考来源 - 期刊学术社区In order to pinpoint the key amino acids that affected virulence, we generated many PA mutant viruses and tested them on ducks.
为进一步在PA上寻找其影响致病力的关键位点,我们拯救出一系列PA突变的病毒,并且做了感染家鸭实验。
参考来源 - H5N1亚型禽流感病毒对家鸭致病力分子机制的研究The expression of virulence genes of Shigella is temperature-dependent.
痢疾杆菌毒力的表达是温度相关的。
参考来源 - 痢疾杆菌免疫及温度比较蛋白质组学研究Genetic mutation in viruses are usually associated with escape of host immune responses, developing drug resistance, modification of virulence and patterns of epidemiology of diseases.
病毒的基因变异与逃避机体免疫应答、出现耐药性、改变致病性和引起疾病流行等有关。
参考来源 - 乙型肝炎病毒变异型s基因疫苗逆转转基因小鼠免疫耐受的研究Avian influenza with low virulence is characterized by respiratory symptom and low productirty.
低致病力禽流感常引起呼吸道症状，产蛋量下降。
参考来源 - H9N2亚型AIV HA2基因在重组杆状病毒和毕赤酵母菌中的表达·2,447,543篇论文数据，部分数据来源于NoteExpress
N-UNCOUNT Virulence is great bitterness and hostility. 恶毒; 敌意 [正式] [oft N 'of' n]
The virulence of the café owner's anger had appalled her.
这位咖啡店老板非常愤怒，充满敌意，把她给吓坏了。
N-UNCOUNT The virulence of a disease or poison is its ability to harm or kill people or animals. 毒性; 致命性
Medical authorities were baffled, both as to its causes and its virulence.
医疗当局对其病因及有多致命都还不怎么了解。
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