Selective pressure

Genetic variation of HA gene is under survival selective pressure ;

HA基因受生存选择压力作用；

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

They showed however species difference in function because of selective pressure of immune systems .

在免疫系统选择性压力下，形成独特的种族特异性。

The selective pressure was quite remarkable .

选择压力非常显著。

CONCLUSIONS The emergence of MRSA is the result of high antibiotic selective pressure .

结论MRSA的出现是高抗生素选择压力的结果；

This average describes the selective pressure exerting on the taxa during evolution .

该平均值可以表示出该类群生物在进化过程中所承受的选择压力。

Molecular Epidemiology and Evolution of Reticuloendotheliosis Virus under the Host Immune Selective Pressure

网状内皮组织增生症病毒的分子流行病学调查及其在宿主免疫选择压下的分子变异

By contrast , such selective pressure is not detected in more distantly related species .

与之相比，在较为古老的谱系中相对缺少这种正选择压力。

If the individual populations'environments were exerting strong selective pressure , such differences should have been apparent .

但如果某一人群的环境真正具有很强的选择压力那么上述差异会很明显。

PPT could be a suitable selective pressure for foreign gene stable expression in kelp gametophytes .

结论：以草丁膦作为筛选压力可以实现外源基因在海带配子体中的稳定表达。

Secondly , we compare antibiotics both Kanamycin and G418 as selective pressure .

第二、比较了卡那霉素和G418作为抗性植株选择剂，以及合适的抗生素选择压力。

Under the selective pressure of antibiotics , drug resistant strains emerged unceasingly since extensively utilization of antibiotics .

随着抗生素的广泛使用，细菌在抗生素的选择压力下，耐药菌株不断产生。

Objective : To observe the relationship between antiseptic selective pressure and bacterial resistace in the course of treatment .

目的：本研究旨在了解治疗过程抗菌药物选择压力与细菌耐药性的关系。

It is proved that RLLGA can well realize the parallel between population diversity and selective pressure by experiments .

在进化过程中，保持合适的个体选择压力，抑制种群多样性的快速下降，是提高遗传算法性能的关键。

However h-VRSA infection originates in HA-MRSA , may be the result of antibiotic selective pressure .

h-VRSA来源于医院感染的MRSA，可能是MRSA在抗生素选择性压力下产生的。

Genetic Transformation Plasmid Stability of Agrobacterium tumefaciens under the Conditions of the Second Suspend Liquid Culture and without Selective Pressure of Antibiotics

携带遗传转化质粒的农杆菌在无抗性选择压二次悬浮下的质粒稳定性

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。

The study demonstrated that low concentration of ciprofloxacin had selective pressure on human intestinal flora and could induce Escherichia coli to produce antibiotic resistance .

研究表明，微量环丙沙星对人肠道菌群具有不同的选择作用，能诱导大肠杆菌产生耐药性。

Low selective pressure makes for the spontaneity emergence of biodiversity , the excessively dominant unitary element in a system restrains the diversity .

低选择压有利于生物多样性的产生，系统中过于优势的单一成分抑制多样性。

Therefore , it is likely to obtain advantage of prevalence under dual selective pressure of antibiotics and vaccine , and should be closely monitored .

因此在抗菌药物和多价疫苗双重选择压力下极可能获得传播优势，今后应对其密切监控。

Genetic Mutations of the Hemagglutinin Gene of H_9N_2 Subtype Avian Influenza Viruses under the Selective Pressure of Vaccination

在疫苗免疫选择压力下H9N2亚型禽流行性感冒病毒HA基因的遗传变异

Under the selective pressure of bats , nocturnal moths have evolved many adaptive traits to defense and evade bats .

在蝙蝠回声定位的选择压力下，夜间活动的蛾类进化出一系列防御、逃避等适应性特征。

Conclusion ; The DDDs , that is the selective pressure of the antibacterial usage , is one of the main influencing factors of the variation of drug resistance .

结论：抗菌药的用药频度，即抗菌药应用的选择性压力，是影响细菌耐药性变异最主要的因素之一。

Over the millennia , the long coevolution of H.pylori and H.sapiens has put intense selective pressure on both species .

幽门螺旋菌和现代智人几千年来的共同演化，对两个物种都带来激烈的天择压力。

About the comparison of probability difficulties between one-choice questions and multiple-choice questicns ; Comparison selective pressure of different selection operators in evolutionary algorithms

关于单项选择题与多项选择题概率难度的比较演化算法中各种选择算子的选择压力比较

When disease control efforts are stepped up , especially through the mass administration of medicines , causative agents are put under enormous stress , which is expressed as selective pressure .

当疾病控制努力逐步加强，尤其是通过大规模施用药物来控制疾病时，病原体被置于巨大的选择压力之下。

Meantime , Ks was more than Ka in same strain and Ks / Ka value showed that there was not selective pressure in HA gene evolution .

同时各毒株Ks均大于Ka，进化检验Ks/Ka值显示HA基因进化压力主要来自自然变异。

The result indicated that antibiotic specific resistance was more prevalent for beta-lactamase , tetracycline and sulfonamide , which reflect the emergence of these antibiotics selective pressure in E. coli .

结果表明大肠杆菌在抗生素的选择性压力下，对β-内酰胺类，四环素和磺胺较为耐药（其）。其耐药机制除对各类药特有的以外。

Because of the concentration of the antibiotics growth in environment brought about by the antibiotics increase of selective pressure , that will accelerate antibiotic resistance bacteria and ARGs emergence and spread in the environment .

因为抗生素在环境中浓度的增长所带来的抗生素选择性压力的加大，将加速抗生素耐药性细菌以及ARGs在环境中的出现和传播。

Such small antisense RNAs may later have gained a role in RNA editing , possibly under selective pressure to repair a region or restore a reading frame after loss or erosion of a module .

之后，这些小的反义RNA可能会在RNA拼接中发挥作用，如在选择压力下修复基因组中一个区域，抑或在丧失或损坏一个模块后恢复一个读码框。