致病

The researchers found that the central genes or 'backbone' of the H9N2 virus that infects guinea fowl can protect birds and mice against highly pathogenic strains of influenza.

研究员们发现感染几内亚鸟类的H9N2病毒的核心基因或者主干基因可预防鸟类和鼠类感染高致病的流感病毒株。

But the disease occurs only in those who have two copies of the gene for the disease-causing haemoglobin.

但这种镰状细胞性贫血症只会发生在同时有两组这种致病的血红蛋白的人身上。

Transposons are one cause of genetic diseases such as haemophilia.

转位子是产生如血友病一类遗传病的一个致病因子。

"It absolutely loses its ability to cause disease," Halford said, adding that tests at SIU with 600 to 700 laboratory mice since July have confirmed the vaccine's effectiveness and safety.

"这完全失去致病能力，"哈尔福德补充说，在小测试，有600至700年7月以来的实验室老鼠证实了疫苗的有效性和安全性。

Aiming at the two major migrating routs of wild birds in China, the ecological distribution and prevalence of avian influenza were studied based on the investigation and analysis of the occurring and relative influential factors of highly pathogenic avian influenza, serology of free birds of HAPI areas were investigation and analysis, live stocks and poultries of some areas of Heilongjiang province were investigation and analysis, the HA gene of avian influenza virus A/Goose/XJYL/10/2003HA(H_5N_1)isolated from Xinjiang goose were cloned and sequenced, NS gene of avian influenza viruses (H_5N_1) isolated in Xinjiang were also cloned and sequenced.

本文在调查、分析禽流感发生情况以及影响疫情相关因素的基础上，针对我国野鸟迁徙的2条主要路线，对我国禽流感病毒生态分布和禽流感流行现状的研究，对爆发高致病禽流感疫区的自主活动鸟类禽流感的血清学调查与分析，对黑龙江省部分地区散养畜禽流感病毒感染的血清学调查与分析，并对鹅源H5N1亚型禽流感病毒新疆分离株A／Goose／XJYL／10／2003HA基因的克隆和序列测定与分析，对H5N1亚型禽流感病毒新疆株NS基因的克隆和序列分析。

The results show that an increasing number of Hausen thesis is correct.

越来越多的结果表明豪森论断的正确性。1991年一项大规模流行病学调查确认表明：HPV的确是宫颈癌的致病因子。

PsCon1 might have influence on germ tube elongation, haustorium and urediospore formation, so it might play a role in the process of stripe rust infection on wheat.

PsCon1参与了小麦条锈菌对小麦的侵染，可能作为一个致病相关基因影响了条锈菌芽管和吸器的形成，同时促进了条锈菌在侵染过程中的产孢。

To the dog pathogenesis is the hemorrhagic yellow helicoid and the dog hook end helicoid two blood serums.

对狗致病的是出血性黄疸螺旋体和犬钩端螺旋体两个血清型。

With rabbit antiserum against ECP of reference strain JEL4,ECPs of 25 Et strains were detected by Dot-ELISA; additionally,alI strains had been detected both on their virulent factor Excellular Products, including the hemolysin and extracellular protease, and on their pathogenicity to mice and Xiphophorus helleri.

以Et强致病株JEL4的胞外产物ECP为抗原制备兔抗血清，用于Dot-ELISA检测25株Et的ECP，同时对Et的溶血素和胞外蛋白酶进行检测，结合小鼠和剑尾鱼的致病性试验。

Harveyi. Previous studies revealed that the hemolysin activity in the extracellular product of V.

已有的研究发现，哈维氏弧菌胞外产物中的溶血素与哈维氏弧菌对鲑鱼的致病性相关。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。