However like other virus HPV also has ability of variation which indicates new pathway research is necessary .

但由于 病毒特有 变异能力，探索多个途径基因沉默的研究非常重要。

Study on Chinese Herb Medicine of Anti-Avian Influenza Virus and Variation of M2 Gene Induced by Amantadine Hydrochloride

禽流感的流行现状及中草药治疗抗禽流感 病毒中药及盐酸金刚烷胺诱导M2基因 变异的研究

Detection of hepatitis B virus DNA in blood donors with anti-HBc positive and analysis of S gene variation

乙型肝炎核心抗体阳性献血者乙肝 病毒DNA检测及基因 变异分析

The study of pathogenesis of porcine parvovirus were focused on the process of viral replication and infection while the relationship between cells and virus variation of cytokines of host cell infected with porcine parvovirus have not been reported .

对于猪细小病毒致病机制的研究多集中在病毒的复制及感染过程，而对 病毒与细胞间的作用关系、猪细小病毒感染引起宿主细胞因子的 变化 规律的研究尚未见报道。

Frequent virus variation is the major cause of influenza epidemics .

摘要流感 病毒的不断 变异是造成流感经常流行的主要原因。

H antigen and N antigen of influenza virus are easy to occur variation mainly in the influenza A virus .

流感 病毒的H抗原和N抗原容易发生 变异，主要发生在甲型流感病毒。

Factors influencing the theraputic effects of interferon such as types of interferon regimens dosage duration patients'factors influence of viruses virus variation drug antibody and combined treatment were reviewed by the authors .

本文对影响干扰素治疗病毒性肝炎疗效的有关因素从药物因素、治疗方案、病人因素、不同病毒的影响及 病毒 变异、药物抗体、联合用药等诸方面进行综述，从而为提高临床应答率提供参考。

Detection of Human Herpesvirus 8 Infection and the Virus Variation in Patients with AIDS in Guangzhou Region

广州地区艾滋病患者中人类 疱疹 病毒8感染及部分序列的检测

Study on hepatitis G virus infectious information and gene variation in Henan province

河南省庚型肝炎 病毒感染情况和基因 变异的研究

Correlation analysis of type A influenza virus genetic variation characteristic with survival selective pressure

甲型流感 病毒基因 变异与生存选择压力相关性分析

Establishment of Monoclonal Antibodies Panel Against Haemagglutinin of H1 Subtype Influenza Virus and Analysis of Its Antigenic Variation

流感 病毒H1亚型血凝素单抗库的构建及其抗原性 变异分析

The virus has been identified as a new variation of the Bunyaviridae commonly found in vertebrates and arthropods .

该 病毒是布尼亚病毒的一个新的 变种，而布尼亚感染常见于许多脊柱动物和节肢动物。

Explore rabies N genetic variation and evolution characteristics analyzes evolution of rabies virus N genes along the time to see whether there is variation and the change of virulence variation . 4 .

探讨狂犬病N基因遗传变异特点和进化特征，分析狂犬病 病毒N基因在时间上进化中是否有 变异及变异的大小。

Influenza is a common acute infectious disease which is harmful to human health . Influenza virus is very famous for its wide range and frequent variation so the virus surveillance is quite important .

流行性感冒（流感）是危害人类健康的常见急性传染病，以其抗原 变异频繁且幅度大而著称，因此 流感 病毒 的 实验室监测尤为重要。

Conclusions Wild-type measles virus prevailing in Zhejiang Province has appeared significant antigenic variation .

结论浙江省麻疹野 毒株已出现明显的抗原性 变异。

There is only one serotype but several genotypes of mumps virus ; there is high genetic variation for mumps virus SH gene which is the basis for international classification .

腮腺炎 病毒只有一个血清型，但有多个基因型，腮腺炎病毒SH基因的 变异程度最大，因此国际上将其作为分型依据。

The most common version is H1N1 and the current virus causing concern is a new variation of that virus .

最普通的 病毒为H1N1，而现在大家最为关注的那个 病毒则是这一 病毒 的 变体。

A precise evaluation of virulence of infectious bursal disease virus ( IBDV ) is very important in studying the regulation of virulence variation and therefore is also important in finding the solutions to IBDV infection .

准确衡量鸡传染性法氏囊病 病毒（IBDV）毒力特征对研究IBDV毒力 变异的分子基础、 变异规律，以及影响IBDV毒力的相关分子生物学、病原生物学和细胞生物学机制有重要意义。

Objective Study the relationship between type A influenza virus genetic variation with survival selective pressure help for the finding of possible vaccine conserved antigen target .

目的研究甲型流感 病毒基因 变异与生存选择压力的关系，指导保守疫苗靶位点的寻找。

Recent years the flu virus from spreading the urgent need for new anti-influenza drugs and influenza virus antigen has been variation making it difficult to play a good role in Western medicine .

近年来由于流感病毒的肆虐，迫切需要新型的抗流感新药，而流感 病毒的抗原又不断 变异，使得西药难以发挥理想的作用。

Medical experts said that the virus mutates very fast speed and variation of the process of gradually develop a resistance to existing drugs .

医学专家说， 病毒变异的速度极快，并在 变异过程中逐步培养起对已有药物的抗药性。

Results Compared with those of wild virus strain HM175 ( subtype IB ) the variation rate of the 168 nucleotides at VP1 / 2A junction regions of the 5 isolated wild type HAV strains was above 7.5 % .

结果所分离到的5株HAV野 毒株VP12A交接区168个核苷酸（nt）的片段与IB亚型的野毒株HM175比较，核苷酸 差异 >7.5%；

Virus is capable of evading immune attack of humoral response by antigenic variation and interfering or inhibiting activities mediated by complements .

其中病毒抗原 变异逃逸抗体的中和和 病毒干扰补体激活的关键环节来抑制 宿主的抗病毒状态是 病毒拮抗机体体液免疫反应的主要途径。

Influenza virus exists widely in nature with numerous of subtypes and high frequency variation characteristics which can infect all birds and parts of mammals .

流感 病毒以其亚型众多、 变异频率高的特点广泛存在于自然界，能感染所有鸟类和部分哺乳动物。

Avian influenza virus is a high contagious strong antigenic variation microorganism and with poor resistance force .

禽流感 病毒是一种传染性高、抗原 变异性强、抗力较弱的微生物，可通过 消化道和呼吸道进入人体传染给人。

IBV is known to have high potential of point mutation gene recombination gene deficiency and gene insert which induce the virus variation .

由于病毒自身基因组易发生点突变、基因缺失、插入及重组，导致 病毒不断产生 变异，新的血清型和基因型不断出现。