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However , HAV infections can also be severe and life threatening .

然而，甲型肝炎病毒感染也可能很严重，甚至会威胁生命。

The rapid immunoelectron microscopy method for detection of HAV and its application

检查甲型肝炎病毒的快速免疫电镜方法及其应用

Children acute serious HAV in plateau section : one case report

高原地区儿童急性甲型重型肝炎1例

Results Anti HAV IgG positive rate of whole population increased significantly .

结果疫苗接种后人群总抗体阳性率有显著的提高。

Preliminary Study on the Complex Gene Vaccine of HAV and HBV

甲、乙型肝炎病毒复合核酸疫苗的初步实验研究

Selection of human phage antibodies against HAV and DNA sequence analysis

人源抗HAV噬菌体抗体的筛选及基因序列分析

A Report of 27 Cases of HAV and HBV Mixed Infection

甲乙型肝炎病毒混合感染27例报告

Experimental Study on Immune Effect of LBP as Adjuvant of HAV Vaccine

枸杞多糖作为甲型肝炎疫苗佐剂免疫效果的实验研究

They hav e a lot to put up with .

他们有许多事要克服。

It 's hard to keep track of all one 's old school friends . I hav

很难保持与所有老同学的联系，我已失去

Nucleotide sequence analysis used in distinguishing vaccine strain from wild strain of HAV

用核酸序列分析鉴别甲肝病毒疫苗株与野毒株

Study on the relationship between result of PCR of HAV and its infectivity

甲型肝炎病毒PCR检测结果与其感染性关系的研究

Safe and effective vaccines are available to prevent HAV .

已有可预防甲肝病毒的安全有效疫苗。

Study on HAV in the cultural medium of the infected 2BS cells

甲型肝炎病毒感染2BS细胞后培养液中甲肝病毒的研究

Certain sex practices can also spread HAV .

某些性行为也能够传播甲型肝炎病毒。

Objective To understand the HAV prevalence and epidemiological laws in Hebei rural area .

目的了解河北农村甲型肝炎（甲肝）在非流行期与流行期的流行强度、流行规律。

Safe food and water provide the best protections against HAV and HEV .

安全的食物和水为防范甲肝病毒和戊肝病毒提供最佳保护。

These properties may be related to the difference in growing ability of HAV strains in cell culture .

这些差别可能与各株HAV在细胞上的增殖能力有关。

I don 't hav a mother around.My parents are dead .

我没有妈妈，我父母都死了

Studies on Expression of Fusion Gene HAV Epitopes Antigen with HBV Core Antigen

甲肝病毒表位抗原与乙肝病毒核心抗原融合基因表达的研究

Application of Chemiluminescent Photographic Detection in Identification of HAV and Human IgM

应用化学发光自显影技术检测甲型肝炎病毒和人IgM

Study of Oral Bivalent DNA Vaccine of HBV and HAV

甲、乙型肝炎口服二价DNA疫苗的研究

Detection of HAV contamination in shellfish by antibody capture / pcr

应用抗体捕捉聚合酶链反应（AC/PCR）检测贝类甲型肝炎病毒污染

He should not hav gone if I could have prevented it .

要是没有你的忠告，我早就失败了。

Geographic areas can be characterized as having high , intermediate or low levels of HAV infection .

甲型肝炎感染率可能具有高、中、低不同的地域特征。

Rapid Detection of HAV in Water by the One-Step Single-Tube RT-PCR

一步单管反转录PCR快速检测水中甲型肝炎病毒

Anti - HAV Level Surveillance of Domestic HAV Attenuated Vaccine Immunization

国产甲肝减毒活疫苗免疫接种后抗体水平检测分析

HAV isa gastro-intestinal infectious diseases leading to liver damage or failure .

甲肝病毒是引起以肝脏损害为主的肠道传染病。

The responses of common marmoset to three different strains of HAV has been studied .

用不同HAV株实验性接种普通狨猴，结果显示均有特异性抗HAV产生和粪便HAV颗粒排出。

Study on the Inactivation Mechanisms of HAV by Chlorine

氯灭活甲型肝炎病毒机理研究