致病

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。

Among them, C hypha is more developing, compared with others, which can produce a great deal of branch spore directly.

结果表明，4种病原菌均具有较强的致病力，但它们之间的致病力差异不显著。

26 study factors (immure,trace elements and salivary nature elements) of 60 RAU patients were analyzed by non-condition logistic regression and the risk ratio of every study factors were calculated.

摘 要：本文对60名RAU患者的与致病有关的免疫、微量元素、唾液天然抗病成份等26个研究因素、应用非条件Logistic回归分析方法，计算出研究因素的致病危险度。

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。

An h-VRSA strain isolated from clinical specimen was induced to increase its resistance to vancomycin in vitro. The coagulase, lecithinase, hemolysin of this resistant strain and its pathogenicity to laboratory animals were examined in comparison with that of the standard S. aureus ATCC29213 strain.

使用万古霉素体外诱导方法将h-VRSA在体外逐渐诱导为VISA，通过对侵袭性酶、毒素的检测及动物致病性观察，并与金黄色葡萄球菌标准菌株比较，了解其致病性的变化规律。

To explore the influence of reticuloendotheliosis virus and subgroup J avian leucosis virus infection on chicken cellular immunity,the mitogenic response to ConA of blood and spleen lymphocytes tested and analyzed with 3H-thymidine(3H-TdR) incorporation assay at different intervals after infection or co-infection of single or both viruses.

自1974年分离出网状内皮增生症病毒[1]和1991年分离出禽白血病病毒J亚群[2]以来，在我国先后分离出不同毒株的REV和ALV-J，并开展了病原学、流行病学、致病性和免疫反应以及预防诊断等方面的研究，揭示出不同的致病性，并且确认它们都可造成感染鸡群免疫抑制，成为一些

This is the first delineation of an aspartic acid substitution in new site of the al chain causing nonlethal osteogenesis imperfecta.

COL1A1基因突变也是中国人群中成骨不全致病原因之一，现发现的突变属成骨不全一个新的致病基因突变。

Strong gains in sales of diagnostic testing products will be driven by the rising numbers of food processor and government agency tests for pathogenic and nonpathogenic contaminants.

在诊断测试产品的销售强劲增长将产生推动作用的食品加工企业和政府机构测试上升的致病性和非致病污染物的数量。

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。

The profiles of pathogenic strains had less difference from each other but more difference from nonpathogenic strains.

致病性钩端螺旋体间MRSP谱型差别相对较小，遗传距离较近，而它们与非致病性钩端螺旋体的MRSP谱型相差大，遗传距离远。

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％。