花瓣彩斑主要由基因突变或病毒入侵而形成。
The variegation of petals originates chiefly from gene mutation and viral infection.
另由蕃茄斑萎病毒(TSWV)引起的芽枯病，主要在广东、广西等地局部流行。
Peanut bud necrosis caused by tomato spotted wilt virus (TSWV) was only found in Guangdong and Guangxi Provices.
目的建立SARS病毒空斑测定方法，为SARS病毒生物学研究提供手段。
Objective To develop plaque assay for SARS virus, in order to provide a reliable means for SARS research.
病毒病常分为几大类，即花叶病，黄化病，斑驳或条斑。
Viruses are often classified into broad categories as mosaics, yellows, mottles, and streaks.
目的研究干血斑(DBS)样本用于人类免疫缺陷病毒1型(HIV - 1)感染前病毒DNA基因诊断的可行性。
Objective To assess the feasibility of detection of HIV-1 proviral DNA on Dried Blood Spot (DBS) samples by nested-PCR assay.
应用透射电镜和超薄切片技术，对长毛对虾和斑节对虾的杆状病毒病进行研究。
With transmission electron microscope and technique of ultrathin section, we studied the baculovirus diseases on Penaeus Penicillatus Alcock and Penaeus Monodon Fabricus.
采用单层琼脂蚀斑测定法，初步研究了重组痘苗病毒的蚀斑大小与毒力之间的关系。
The relationship between virulence and the size of the plaques of recombinant vaccinia viruses was studied by plaque assay method on chicken embryo cell monolayer with AGAR overlay.
2007年，意大利北部曾爆发基孔肯亚病毒，原因也是虎斑蚊的猖獗。 基孔肯亚病毒常见于热带地区。
In 2007, tiger mosquitoes were blamed for an outbreak in northern Italy of the chikungunya virus, more commonly seen in tropical regions.
相应病毒的兔免疫血清均显示中和反应，能够抑制空斑形成。
Plaque formation could be neutralized by rabbit sera against corresponding strains of HEV.
我们的烟草患番茄斑萎病毒的比例很低，由于这种病，我们的损失及质量的下降今年是最小的。
We have very low levels of tomato spotted wilt virus, so our losses and our reduction in quality will be minimum this year because of that disease.
标准蚀斑试验测定麻疹病毒滴度。
The titers of measles virus were determined by standard plaque assays.
参考品病毒滴定采用金黄色地鼠传代细胞(bhk—2 1)蚀斑滴定法。
对其蚀斑特性和血凝特性进行了初步研究，把这株轮状病毒地方株命名为HRB 0 2株。
Initial research study on characteristic of plague and hemagglutination were carried out, and named it as HRB-02.
对其蚀斑特性和血凝特性进行了初步研究，把这株轮状病毒地方株命名为HRB 0 2株。
Initial research study on characteristic of plague and hemagglutination were carried out, and named it as HRB-02.
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