... virulence 毒力 virulent 强毒的，烈性的 virusoid 拟病毒，协生病毒，核壳内类病毒壳协病毒[存在于核壳中的一种小环状RNA,它与病毒RNA相互协助，引起宿主致病] ...
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接种山羊痘强毒的山羊都发生山羊痘的典型临床症状和病理变化。
The characteristic clinical symptoms and pathological changes of goatpox were found in all goats inoculated virulent goatpox virus.
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.
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.
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