结论麻疹病毒的减毒株与强毒株存在差异。
Conclusion The attenuated measles virus strain is different from strong virus strain.
结果表明：这两株分离株均为新城疫强毒株。
The results demonstrates that two isolates are high virulent Newcastle disease virus.
结论实验用昆明小鼠中存在鼠痘病毒强毒株感染。
Conclusion The infection of virulent strain of mouse poxvirus exists in experimental mice.
证实，该分离株为猪伪狂犬病强毒株，脾为病毒检测的首选靶器官。
The results revealed that the PRV isolate was virulent and the spleen was the most sensitive target organ for PRV detection.
目的提高昆明鼠抗弓形虫强毒株（RH株）的免疫力，延长其生存时间，为进行相关实验研究提供动物模型。
Objective To improve immunity of KM murine against virulent RH strain of Toxoplasma, to extend its duration of life and provide model for related research.
以艾维茵肉鸡为试验动物，研究了垂体肾上腺轴在传染性腔上囊病病毒(IBDV)强毒株攻击时对免疫系统的调节作用。
Avian broilers were used as experimental objects to study the mechanism of the pituitary adrenal axis regulating immune system when being infected with virulent infectious bursal disease virus (IBDV).
通过超薄切片和透射电子显微镜技术对鸭病毒性肠炎病毒(DEV)CH强毒株在鸭胚成纤维细胞(DEF)中的形态结构进行了研究。
Ultrathin sectioning and transmission electron microscopy of infected duck embryo fibroblasts (DEF) were employed to investigate the morphology of virulent duck enteritis virus (DEV) strain CH.
结果说明应用所设计的引物进行RTPCR快速检测PRRS是可行的，为我国快速特异诊断PRRS和PRRSV强毒株的深入研究奠定了基础。
The result showed that PRRSV can be quickly diagnosed by RT PCR, which laid a basis for quick diagnosis of PRRS and further research of the PRRSV isolates of our country.
四川成都某鸭场分离得到一株疑似鸭瘟病毒，经细胞培养、中和实验、PCR鉴定，证明分离株为鸭瘟病毒，毒力测定及动物实验表明其可能为强毒株。
The virus was proved to be a Duck Plague virus by means of cell culture, neutralization test and PCR assay, and it was maybe a virulent virus.
为了解乙型脑炎（乙脑）减毒活疫苗弱毒株SA14142神经毒力的减弱程度，本文对弱毒株及其原株SA14强毒株进行了猴体和小白鼠的致病性和病理学变化的比较试验。
In order to study the attenuation of neurovirulence of SA14 14 2 attenuated vaccine virus, monkeys and mice were tested with the strain and its parent SA14 virulent strain.
接种MD三价疫苗的4个品系的商品鸡群，抗RB1B超强毒株攻毒的平均保护效力为94.60%；在模拟MD强毒自然传染的试验中，MD三价疫苗的保护效力达到95.65%。
The mean protection of trivalent vaccine was 94.60% in four commercial chicken strains against RB1B challenge, and was 95.65% in the MDV natural infection model experiment.
Astrogenetix利用这快速繁殖和超活性状态去遥控沙门氏菌负责感染的基因然后去除这强毒基因以建立疫苗弱毒株。
Astrogenetix took advantage of that fast-growing, super-active state to home in on the salmonella genes responsible for infectiousness, and then removed said genes to create a weak vaccine strain.
Astrogenetix利用这快速繁殖和超活性状态去遥控沙门氏菌负责感染的基因然后去除这强毒基因以建立疫苗弱毒株。
Astrogenetix took advantage of that fast-growing, super-active state to home in on the salmonella genes responsible for infectiousness, and then removed said genes to create a weak vaccine strain.
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