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。
如何衡量毒性？
Muramidase released protein (MRP) is a key virulence factor of SS2.
溶菌酶释放蛋白（MRP）是SS2的主要毒力因子之一。
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。
It is to be investigated whether this mutation is associated with virulence.
此变异是否与病毒的毒力有关尚待进一步研究。
The results showed that the JDS-CPV has higher virulence to pine caterpillar.
证实JDS-CPV对我国马尾松毛虫有较好的毒力。
There are two crucial factors: the transmissibility of the virus, and its virulence.
有两个关键因素：病毒的传播性和其毒性。
Objective to analyze factors related to the virulence associated genes of Leptospires.
目的探讨钩端螺旋体(钩体)毒力相关基因的分布特点。
The virulence experiments also indicated that Chromobacterium violaceum had a strong virulence.
毒力试验结果表明该菌有较强毒力。
The results of virulence gene survey showed that the frequencies of V2, V2+ 6 and V8changed widely.
毒性基因结构分析表明，V2、V2+6和V8等毒性基因的频率有较大变化。
Many bacteria including some pathogens can enter this state and maintain virulence or pathogenicity.
许多细菌包括病原微生物可进入这一状态并保持毒力或致病性。
Conclusions Chromobacterium violaceum is a kind of Gram-negative bacteria, and has strong virulence.
结论紫色色杆菌是一种革兰阴性杆菌，毒力强。
This review is mainly about properties and pathogenesis of the virulence factors in molecular biology.
本文主要对拟态弧菌毒力因子的分子生物学特性及其致病机理进行了综述。
Toxicology experiment indicated that it has no virulence to skin, no stimulus, no erythema, and no dropsy.
毒理学试验表明，该品对皮肤无毒，无刺激性，无红斑、水肿现象。
Aims: in order to clarify the clinical epidemic of hepatitis G virus (HGV) and evaluate the virulence of HGV.
目的：为了弄清肝病患者中庚型肝炎病毒(HGV)的临床感染情况和评估庚型肝炎病毒的致病力。
But the essential nature of the pathogen, its personality, its virulence, remain matters of frenetic investigation.
但这种病原体的内在实质、特性、致病力，仍在加紧研究中。
This review dwells on the hypothesis of virulence evolution in malaria parasite and the related molecular mechanisms.
该文综述了疟原虫毒力进化的假说及其相关的分子机制。
This was most likely due to disappearance of triggers, changes in their virulence, or increased resistance against them.
这最有可能是因为致病因素的消失，毒性的改变或者对其抵抗力的增加。
The damage of primary and stereoscopic structure of parasporal crystal made its virulence receded and even lost completely.
伴孢晶体的一级结构和立体结构被破坏导致伴孢晶体的毒力降低甚至完全丧失。
Pathogeniciy of Vibrio mimicus strongly relates with the virulence factors produced by the pathogen during the growth phase.
拟态弧菌的致病作用与其在生长繁殖过程中产生的毒力因子密切相关。
Objective:To construct mouse peritonitis models of Enterococcus for the study of the putative virulence factor of Enterococcus.
目的：建立肠球菌毒力相关性小鼠腹膜炎模型，用于肠球菌类毒力因子的研究。
The compilation of information concerning pathogens, virulence factors and antigenic epitopes has resulted in many useful databases.
有关病原体、毒力因子和抗原表位的信息的编纂产生了很多有用的数据库。
Purpose To explore key amino acids sites on HA sequence which may determine the virulence of influenza a H5N1 for mammalian species.
目的筛选影响H5N1亚型甲型流感病毒对哺乳动物毒力变异的HA序列主要氨基酸位点。
The researchers also found that high-salt conditions increased transcription of two genes responsible for the virulence of H. pylori.
研究人员还发现，高盐环境使得与幽门螺旋杆菌危害性相关的两个基因转录增加。
Objectives To investigate the Staphylococcus gallinarum′s biochemical traits, virulence factors and the methods of its rapid detection.
目的探讨鸡葡萄球菌的生物学特性、可能存在的毒力因子及快速检测方法。
The other mutation with a significant effect on virulence has been seen in the NA gene of two influenza virus strains that infect mice.
另一种对病毒毒性具有重要影响的突变，存在两种感染小鼠的流感病毒株的NA基因上。
Fusion protein is the main protective antigen of NDV and the primary structure of fusion protein determines the virulence of the virus.
蛋白不仅是NDV主要保护性抗原，而且F蛋白一级结构(氨基酸顺序)决定病毒毒力。
Fusion protein is the main protective antigen of NDV and the primary structure of fusion protein determines the virulence of the virus.
蛋白不仅是NDV主要保护性抗原，而且F蛋白一级结构(氨基酸顺序)决定病毒毒力。
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