致病

Background: Candida is an opportunistically pathogenic fungus.

背景：念珠菌是一种条件致病性真菌。

Immunosuppressive viruses ; Multiple infections ; Opportunistically pathogenic viruses

免疫抑制性病毒；多重感染；条件致病性病毒

Objective:To study the pathogenic fungi of otomycosis and to make correct diagnosis and treatment.

目的 ：了解外耳道真菌病的致病菌种，正确诊断和治疗外耳道真菌病。

Objective :To study otomycosis of pathogenic fungi,antifungal susceptibility test and clinical efficacy.

目的：了解耳真菌病的致病菌种及其药物敏感性，进而探讨有效的治疗方法。

The activities of extracellular amylase, extracellular proteinase, and extracellular cellulase are reduced in panD mutant.

发现突变体的致病力有所下降(接种10天后平均病斑长度为：野生型Xcc 8004 12.29毫米，panD突变体121C07为4.56毫米)。

Parasitica system has evolved into a very useful model for understanding the interaction between a virus and its host and for dissecting the virulence regulation of a pathogenic fungus.

低毒病毒／板栗疫病菌系统已经成为研究病毒与宿主相互作用以及病原真菌致病机理的很好的模式系统。

In order to evaluate resistance risk of Phytophthora parasitica var. nicotianae to metalaxyl, the metalaxyl-sensitive strain 240 and metalaxyl-resistant strain191 were studied. The results showed that the mutation rate of metalaxyl-sensitive strain 240 was 7.0×10–5 on CA medium with metalaxyl concentration of 10μg/mL.

为了评估烟草黑胫病菌对甲霜灵的抗药性风险，以对甲霜灵敏感和高抗的烟草黑胫病菌240和191为出发菌株，进行了抗性突变频率测定、抗性诱变、抗性水平测定、遗传稳定性、生长速率、致病性测定和适合度等研究。

Ten years wide investigation and research on the characteristics and pathogenicity of cryphonectria parasitica showed that, Cryphonectria parasitica existed widely in the distributing areas of Castanea mollissima, and that it belonged to weak parasite, only lived on the weak and dying branchs, sprouts, and soon. Cryphonectria parasitica was not main and direct death cause of Castanea mollissima, and the dead parts had no great influence on the growth of whole tree.

经过10余年对栗疫病发生特点和致病性的大量调查研究，结果表明栗疫菌在板栗分布区普遍存在，是弱寄生菌，在本地只寄生那些生长十分衰弱，即将死亡的板栗树干、苗木等，但栗疫菌的寄生不是这些部位死亡的主要和直接原因，而且它所寄生的部位局部死亡后对整株栗树的影响不大，因此，栗疫病在一般倩况下并非毁灭性病害。

Progressive atrophic rhinitis is an important respiratory disease in swine industry, caused by toxigenic Pasteurella multocida. The OmpH of Pasteurella mumtocida is a major outer membrane protein involved in the pathogenesis and immunity. In this study the ompH gene of P.

传染性萎缩性鼻炎是养猪业中的一种重要的呼吸道传染病，产毒素多杀性巴氏杆菌是其重要的病原之一，外膜蛋白H在该菌的致病和免疫中发挥重要作用。

Study the pathogenetic mechanism of HCV is of great importance.

深入研究丙型肝炎病毒的感染与致病机制具有重大的现实意义。

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。