病毒

No, canine influenza was diagnosed initially in 2004. Until this year, outbreaks seemed to be contained to greyhound racetracks and seemed to affect only racing dogs.

狗流感和之前影响马的流感病毒有相关性，从某种程度上可以说，这种病毒是马流感病毒变异之后，形成了从马到狗之间传播的能力。

"It is thought that provirus may account for approximately 8% of the human genome in the form of inherited endogenous retroviruses."

要是想了解一点的话给你几个词去检索：原病毒，逆转录病毒，内源性逆转录病毒。

"It is thought that provirus may account for approximately 8% of the human genome in the form of inherited endogenous retroviruses."

这都不知道还好意思发这么多议论？要是想了解一点的话给你几个词去检索：原病毒，逆转录病毒，内源性逆转录病毒。

In order to elucidate the regulation mechanism of RU5 region to BFV gene expression, BFV3026 provirus DNA was used to construct the plasmids containing different deletion of R region, which were cotransfected with luc report gene locatied behind the IP promoter to BL12 cells, and luciferase activities was assayed, confirming that U5 region could repress the initiation function of LTR as well as IP. The BFV structure genes with different deletion of R region were cloned closely behind to heterogenous CMV promoter, then transfected to 293T cells, RT activity was performed, testifying the R region was required for BFV pol gene expression, and also the function domain was identified within the 100n.t. sequence at the 5′end.

以牛泡沫病毒(Bovine foamy virus， BFV)中国株BFV3026原病毒DNA为材料，构建R区系列缺失质粒，通过对其转染细胞中RT水平及对缺失质粒与luc报告质粒共转染细胞中萤火虫荧光素酶活性的测定，确立U5区对于BFV3026两类启动子LTR和IP均具有负调控作用；同时将带有不同R区的BFV3026结构基因片段克隆于异源启动子CMV之下，通过对其转染细胞293T中RT酶活性的测定，确立R区对于病毒结构基因pol的表达具有一定的调节作用，并将其功能区域初步界定在R区5′端100bp内。

The gene expression of chimeric virus could be detected in 293T cells transfected by SHIV proviral DNA.

用此 SHIV 原病毒 DNA 转染 293T 细胞，细胞中能够检测到嵌合病毒基因的转录与翻译；在细胞培养液上清中亦可检测到装配出的病毒颗粒。

The presence of these genes in the phages suggests that they play a functional role in the phages which gain some benefits from them.

这些外源基因在病毒中存在，显示这些基因可能对病毒有某些好处，并在病毒中发挥着重要的功用。

Pedants might object that viruses are not truly alive, but that is a philosophical rather than a naturalistic argument, for they have genes and are capable of reproduction-a capability they lose if they are damaged.

墨守成规的学者们可能会提出反对意见，即病毒并非真正的生物。但这个问题已经上升到哲学层面了，病毒拥有基因、有复制的能力，这种能力在病毒被破坏之后也随之消失，（从自然科学的意义上来说，它拥有生命的特征）。

Canine parvovirus is a very hardy virus, and this is one of the reasons that parvovirus is so dangerous.

犬细小病毒是一个非常坚强的病毒，这是一个原因，细小病毒非常危险。

Those viruses, which can selectively replicate in and kill tumor cells, were called conditional replicative viruses or oncolytic viruses.

这种能选择性地在肿瘤细胞中复制，并进一步杀灭肿块，被称为条件性复制病毒或选择性复制病毒(conditional replicative viruses)，或溶瘤病毒。

Using t-tset to analyze significance of difference. Results: 1. H101 could cause cytopathic effects in U251 cells from 24h and shows greater oncolysis effects when much more H101mRNA expression by enhanced virus tite or prolonged time.

结果： 1。 H101病毒在24小时就可以对体外培养的胶质母细胞瘤U251产生抑制作用，加入的病毒滴度越大抑制率越高，并且随着病毒作用时间的延长，细胞病变反应越发明显，H101mRNA的表达呈上升趋势。2。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。