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.
以猕猴桃汁为原料，添加发酵力弱、产香明显的二株酵母菌C。
The nonalcoholic beverage was prepared through the fermentation of kiwifruit juice by two strains C.
并且，早熟株的弱毒性和早熟性具有遗传稳定性，通过放松选择压力反复传代后无恢复现象。
The characteristics of the precocious strain is genetically stable and can't reinstate by relaxing the selection pressures.
浸根法可适用于弱毒株的大量接种。
The root soak was a method to mass inoculation of mild strains.
对鸭肝炎鸡胚化弱毒株MY接种4日龄雏鸭后的组织变化进行了动态观察比较研究。
The dynamic changes of tissue structure in 4 days old ducklings which were infected with chicken embryo attenuated strain MY of duck hepatitis virus were observed.
新城疫病毒B95 (NDV B95)是从国外引进的一株热稳定性的天然弱毒株。
Newcastle disease virus (NDV) avirulent strain B95 was newly introduced from abroad.
考察了弱毒株本身对烟草植株的影响。
We examined the effects of mild strains of TMV on the tobacco plants.
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.
气管IEL数目的变化：PRRS弱毒株鼻腔免疫组IEL数量比对照组和肌肉免疫组呈极显著增加（P<0.01），PRRS弱毒株肌肉注射免疫组IEL数量与对照组无显著变化。
The results showed that the numbers of IEL in tracheas was increased significantly (P<0.01) with PRRS attenuated strain immunization by nasal route contrast to muscle injection and control group;
本试验用强迫猪链球菌反复通过不易感的鸡体继代的生物学方法，选育出一株弱毒猪链球菌。
The C_(135) strain attenuated from a prototype of streptococcus suis through repeated insusceptible chicken passage pathway is successful and here presented.
本试验用强迫猪链球菌反复通过不易感的鸡体继代的生物学方法，选育出一株弱毒猪链球菌。
The C_(135) strain attenuated from a prototype of streptococcus suis through repeated insusceptible chicken passage pathway is successful and here presented.
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