致病的

Through a great number of field investigations and inoculation identifications, six corn varieties( Denghail, Jidan209, Dan639, Nongda3138, Benyu9) and two corn inbred-lines( Mo 17 and Huangzao4 ) widely popularized and used in Jilin province corn production and corn breeding now were defined as ideal differential hosts for pathogens of Sporisorium reilianum .They represented different resistant and susceptible level of corn to Sporisorium reilianum and were able to group the pathogen collections of Sporisorium reilianum from different corn-grown areas in Jilin.

经过大量的田间调查及人工接种鉴定，确定了登海1、吉单209、吉单180、丹639、农大3138、本育九、Mol 7和黄早四为较理想的玉米丝黑穗病鉴别寄主，初步建立了吉林省玉米丝黑穗菌致病性分化的鉴别寄主体系，该鉴别体系中的6个玉米品种及2个玉米自交系代表了吉林省正在推广使用的玉米品种资源和二大骨干自交系，对今后鉴定和监测病菌致病类型的分化具有重要作用。

On the base of upper studies, epidemiology and space-time distribution of HAPI were analyzed, the risk assessing frame of HPAI were established, the space-time model of air temperature which influenced the transmission of HPAI virus were analyzed and constructed, Bio-Math model for immunity and prevalence of avian influenza were establish.

在此基础上，对禽流感发生的流行病学分析，对高致病性禽流感时空分布规律的初步研究，从而初步建立了高致病禽流感传播的风险评估框架，分析并构建了温度对我国禽流感传播影响的时空模式，建立了禽流感免疫与流行的生物数学模型初析。

The SARS virus origin which obviously differs from the theory of out space origin and the theory of wildlife origin was theoretically discussed based on principles of pollution evolution ecology,pathogenesis and infectant characteristics of SARS,and some relevant experimental evidence. It emphasizes on the fact that increasingly combined pollution in China provides a substantial basis for virus evolution.

针对当前广为流传的SARS病毒"太空起源说"和"野生动物来源说"两种理论，本文根据污染进化生态学原理和SARS病毒发病传染特征，以有关实验结果为科学依据，阐述了SARS病毒的起源问题，指出：我国当前环境日益严重的复合污染为SARS致病病毒的产生提供了适宜的外部生态条件和物质基础，SARS致病病毒可能起源于多个病毒的基因重组或融合，更可能是一种来自于感冒病毒进化而形成的超级感冒病毒。

And PG activities of pathogenic isolate was obviously higher than that of nonpathogenic isolate, It is same that PG activities of all isolates were the highest in the seventh day after cultivating.

综上所述，PG活性的高低与大豆疫霉根腐病菌的致病力强弱有一定的关系，是该病菌的一种起致病作用的细胞壁降解酶。

Many pathogens of animal and plant, such as Erwinia cawtovora pv.carotovora and Pseudomonas aeruginosa, producing some kinds of virulence factors before attacking the host, and most of those virulence factors was modulated by the quorum-sensing system which relys on the secret of some small quorum sensing signals.

很多动植物的病原细菌，包括胡萝卜软腐欧文氏菌和铜绿假单胞菌等在侵染动植物有机体的过程中，首先利用细菌的群体感应机制诱导致病因子的表达，在致病因子的作用下侵染宿主。

The aim of the present study was to learn the manifestation of which the patients mainly complained of dry mouth, the corresponding pathogenic factors and their correlation, which is helpful to build up a thinking pattern for diagnosis and therapy based on the different clinical manifestations of patients with xerostomia.

本实验试图通过了解口腔门诊以口干为主诉患者的临床表现类型；口干患者的主要致病因素；并寻找口干相关因素与其临床表现类型之间的联系，以期初步建立根据口干患者不同临床表征作出致病因素分析和进行针对性治疗的临床思维模式，并为进一步的分析性研究及试验性研究提供线索。

Swine enteropathogenic E. colis were rejuvenescenced and 6 of them were selected to prepare blood serum. We had tested the reactance of cross agglutination and agar diffusion between the strains and the blood serums. No. 300 and No. 343 were selected because they had highly cross reaction. To test superantigen of No.300 and No.343, the antigens made by both of them immunized piglets, and then we detected the serum 0D values with indirect ELISA. The OMP and PF of No. 300 and No. 343 were extracted for SDS—PAGE and westen-blotting.

本研究针对10株猪致病性大肠杆菌，经复壮后选取致病性强的6菌株作为供试菌株，制备免疫血清与这6菌株的多种抗原分别进行交叉凝集试验和琼脂扩散试验，根据各菌株抗原的交叉反应程度，筛选出抗原交叉程度高的菌株300和343，检测两菌株超抗原的毒性作用，以不同方式制备抗原免疫仔猪，用间接ELISA检测免疫效果，并提取菌株300和343的外膜蛋白和渗透因子经SDS—PAGE及免疫印迹试验，进行相关分析。

This Program Project is composed of five projects and an administrative core unit. The specific aims of Project 1 are to study the roles of SPE B, SPE A, M protein and NADase to correlate with bacterial virulence and disease severity in different clinical spectra of GAS infections. We will also study the pathogenic factors of a unique virulent clone of Ml strain caused dominant invasiue GAS disease in Taiwan in the past two years. The effects of penicillin and clindamycin on the production of SPE A and SPE B will also be determined.

本群体计画包含有5个子计画及一个行政核心计画，第一子计画的目标在於研究热原性外毒素A，B和M蛋白及NADase在A群链球菌感染中的功能及其与细菌致病力、疾病严重性的相关性，同时将针对一株最近在台湾造成侵犯性较强的A群链球菌菌株研究其致病因子的异同，并将探讨抗生素penicillin及clindamycin对於热原性外毒素A及B产生的影响。

CG strains were isolated from the mango fruits with anthracnose symptoms in different locations on Guangdong and Hainan Province, China. The pathogenicity and sporulation capability of these isolates were compared, and the isolate LCG5 from CATAS, Danzhou City, Hainan Province, China were Chosen for further use in this study for its high virulence on mango fruits and also good sporulation capability.

分别从海口、湛江、两院三地采集到CG菌株进行纯化培养，通过芒果接种实验，对发病率、发病指数及菌株的产孢能力三项测试，最终确定选用接种发病率为100％，病情指数为71.1，菌株产孢能力达1.2×10~6个／ml的两院第5号菌株(缩写为LCG5)，其致病力比较强，产孢能力可以保证了转化体系的成功建立，方便对突变体库的致病和产孢相关突变体的筛选。

Previously, it was found that the hemolytic activity of the extracellular product of V. harveyi was involved in pathogenesis in salmonids, and the most pathogenic isolate, VIB 645, contains two closely related hemolysin genes, i.e. vhhA and vhhB.

已发现哈维氏弧菌对鱼类的致病性与其分泌的胞外产物中的溶血素相关，致病力最强的菌株VIB 645有2个碱基序列非常相似的溶血素基因，vhhA和vhhB。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。