致病性

All the strains isolated from the patients are capable of producing toxin which are related to its pathogenictity and epidemicity.

从所有病人中分离到的菌株均为产毒株，与致病性和流行强度有关，治疗霍乱病人应结合本地区情况，根据不同菌型选择相应的抗生素药物。

The avian influenza A (H5N1) epizootic in Asia and parts of Europe, the Near East, and Africa is not expected to diminish significantly in the short term.

在亚洲、欧洲部分地区、近东和非洲地区爆发的H5N1型高致病性禽流感疫情在近期无望得到有效缓解。

Rh blood; erythroblastosis, fetal; infant, newborn; plasma exchange; blood transfusion

本文对孕妇进行产前血浆置换降低血清中致病性Rh 抗体的效价，对产后患儿采用Rh阳性血代替Rh 阴性血换血治疗，收到满意的疗效。

The pathogenicity of 19 strains of Alternaria alternata isolated from Eupatorium adenophorum was studied. 5.8S rDNA, ITS1 and ITS2 sequences of 22 strains from crofton weed and other plants were analyzed.

对分离自紫茎泽兰的19个链格孢菌菌株的致病性进行了比较研究，并对这19个菌株和其它来源的3个菌株的5.8S rDNA及其两侧的ITS1区和ITS2区进行了序列分析。

Objective In order to isolate and purify an exotoxin of Streptococcus mitis which can cause toxic shock syndrome and investigate its pathogenicity.

目的 分离与纯化致中毒性休克综合征缓症链球菌外毒素蛋白，并对其致病性进行初步研究。

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。

Pike protein consists of S1 and S2 subunit. S1 is head and S2 is rod-shape part, intermolecular effort can bind each other. S1 can bind with host cell epimembranal acceptor. S2 can fix integral Spike protein on the cellular membrane and mediate cell-fusion with virus and host cell. There are significant antigen determinant of virus in Spike protein, genic heterogenesis can effect viral pathogenicity. SARS-CoV Spike protein, which has 23 pieces larvaceous glycosylation sit, consists of 1256 amino acid. Its N-terminals and C-terminals is corresponding conservative.

蛋白是I型膜糖蛋白，介导病毒与宿主细胞膜上的受体结合并与宿主细胞膜相融合。S蛋白由S1和S2两个亚基组成。S1形成球状部分，S2形成棒状部分，两者之间通过分子间的作用力相互结合。S1能与宿主细胞上的受体结合，S2可把整个S蛋白固定在细胞膜上，并介导病毒包膜与宿主细胞膜融合。S蛋白上有重要的病毒抗原决定簇，S基因的突变会影响病毒的致病性。

The mutant decreased in growth rate, and lost in pathogenicity to wheat seedling and in homothallism as compared with those of parent isolate.

该突变株与亲本菌株相比，生长速率下降、致病性和同宗配合能力丧失。

It was found that the vaccines used did not cause the adverse reactions such as hypersusceptibility and changes of feed intakes, and that 2 times of vaccinations of the vaccines all effectively enhanced the antibody levels, respectively, in which the No.Ⅲ vaccine stimulated antibody as rapid as the first vaccination was done while the No. I and No.Ⅱvaccines did not result in the antibody by the first vaccination. It was concluded that the No.

结果发现，三种供试的高致病性蓝耳病灭活疫苗均未引起供试猪发生过敏反应和采食量变化等不良反应；三种供试灭活疫苗经2次免疫后，均能提高抗体水平，其中供试疫苗Ⅲ在首次免疫后即能有效产生抗体，而供试疫苗I和供试疫苗Ⅱ在首次免疫后不能有效产生抗体。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。