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They were sequenced and compared with other isolates from different areas of the world and constructed the phylogenetic tree.

用PCR的方法扩增福建 5株样品的Env及LTR区基因，测序后与来自世界各地的代表株进行比较、分析，构建进化树。

In addition, the 8 genes in every strain of isolates were not the same sub-lineague in the phylogenic trees, indicating that they might be the products of natural reassortment occurring among different sub-lineages.

所分离毒株中每个毒株的8个基因，在遗传进化树上的分支不具有统一性，说明此3个毒株可能为不同基因亚系间发生自然重排的产物。

Based on P1 amino acid sequence, the PVY phylogenic tree was established and the isolates of PVY were clustered into many branches.

依据P1蛋白氨基酸序列建立了PVY系统关系树并对PVY进行了类型分析。

Over the first 4 years of PROTEKT US, penicillin and erythromycin resistance among pneumococcal isolates has remained high.

PROTEKT头4年的研究中，青霉素和红霉素的耐药率仍然很高。

Three infectious bronchitis virus isolates named as Q1, J2 and T3 were isolated from proventricular tissue taken from vaccinated chicken flocks in China.

从我国接种过传染性支气管炎疫苗的幼鸡群的腺胃组织中分离得到三个传染性支气管炎毒株Q1、J2和T3，并对它们的部分生物学特性进行研究。

7Kb of these isolates were amplified by using RT-PCR The amplified DNA were then cloned and sequenced The analysis of the sequence data further confirmed that IBV was the pathogenic agent of the infectious disease associated with proventricular lesion

利用扩增片段两端的EcoRⅠ和BamHⅠ位点将扩增片段克隆进pBluescripⅡKS载体，转化大肠杆菌JM109，挑选白色菌落并用PCR方法对插入片段进行鉴定。用双脱氧终止法对扩增的片段进行测序并与GenBank公开的序列进行比较分析。结果进一步证实IBV是导致此种野外发生的腺胃相关疾病的病原。

Genes for resistance to leaf rust in twenty-four important wheat cultivars from six wheat breeding institutes or companies were analyzed using fourteen isolates of Puccinia triticina.

选用14个具有不同毒性基因组合的叶锈菌系，推导分析了来自山西省6个育种单位和种子部门的24个重要小麦品种所携带的抗叶锈病基因状况。

Strain LT6 exhibited significantly different antagonistic activities against different species of Pythium or different isolates of the same species.

腐霉菌株对由LT6产生的抗生素吩嗪-1-羧酸的敏感性存在变异，被测的54株腐霉，当PCA浓度为7.0μg/mL时，敏感的为28株，高抗的为15株。

It showed the widest inhibition zone against Pythium ultimum (7.5mm),while it was lest effective to unknown species. The size of inhibition zones on those eleven tested isolates were all less than 3.0 mm.

用不同的培养液培养LT6所得的代谢物，在相同浓度下，对同一腐霉菌菌丝体生长的抑制效果不同，培养液1/5 TSB和NB明显强于KMB。

To understand whether there is gene reassortment recently, we also analyzed the evolutionary relationship of these isolates. It appears that no HA/NA reassortment was found.

想了解这段时间内是否出现基因重组，我们也分析了这些分离株NA及HA基因的演化关系，结果显示这段时间内的A型流感病毒在HA及NA基因之间没有出现互换的现象。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。