virulent infection 中文意思是什麼
virulent infection
解釋
有毒害感染-
The highest antiviral litre of rpoifn - a was l l08iu / mi. the rpoifn - a protected pk - 15 cells against virulent hog cholera virus ( hcv ) infection in vitro
Sds - page分析表明，構建的重組表達質粒pqe30 poifn在大腸桿菌jm109中表達的rpoifn占菌體蛋白總量的20 26 。 -
Newcastle disease is a highly contagious and economically most important disease of poultry. the disease also inflicts many other avian species. the disease varies in degree of severity ranging from mild, inapparent infecion to severe disease. based on the severity of the disease in chickens, the causative agent of the disease, newcastle disease virus ( ndv ), is divided into three pathotypes : ( 1 ) the lentogenic strains, which cause mild inapparent infection ; ( 2 ) the mesogenic strains, which cause mild respiratory symptoms with low mortality ; ( 3 ) the velogenic strain, which are highly virulent and cause high mortality
新城疫（ newcastledisease ， nd ）是由新城疫病毒（ newcastlediseasevirus ， ndv ）引起的侵害禽類的急性高度接觸性傳染病，是家禽傳染性疾病中危害最嚴害的疫病之一，由於對世界養禽業危害極大，故被國際獸疫局確定為類傳染病。在傳染性疾病的預防中，疫苗是減少易感人群而被最廣泛採用和最有效的途徑。 -
It is also more virulent because the inoculum required for septicum to cause an infection is ~ 300 times lower in mice compared with perfringens
小鼠實驗證實梭狀芽孢桿菌比產氣莢膜桿菌的毒性更強，因為前者造成感染的接種量僅為後者的約1 / 300 。 -
Computer viruses act like biologics in the way they can be set off : they can be virulent from the outset of the infection or they can be activated by a specific event ( logic bomb )
計算機病毒的傳播行為與生物病毒極其相似：它們可能從開始感染時就是致命的，可以被某些特定的事件所引發（邏輯炸彈） 。 -
Pseudorabies virus ( prv ) is the causative agent of aujeszky ' s disease, which results in significant losses in pig husbandry. thymidine kinase ( tk ) gene is one of the main virulent genes of prv, and it is essential to the propagation of prv in the nerve tissues, but dispensable for virus replication and infection in other tissues
偽狂犬病是由偽狂犬病病毒（ pseudorabiesvirus ， prv ）引起的家畜和多種野生動物的一種以發熱、奇癢、呼吸和神經系統疾病為特徵的急性傳染病，妊娠母豬可發生死胎和流產，是危害養豬業的一個重要傳染病。 -
Diagnostic technique for virulent marek ' s disease virus infection of chickens
雞馬立克氏病強毒感染診斷技術 -
This strain ' s virulence was judged by mean death time of chick embryos ( mdt ), intracerebral pathogenicity index in day - old chicks ( icpi ) and intravenous pathogenicity index in 6 - week - old chickens ( ivpi ) and it was found to be the virulent strain. at last, it was tested by the recurrent infection and found that it was the newcastle disease virus ( ndv ), and it was named hbg - 1 strain. in order to find the difference of the cleavage site of this strain with f48e9 and ? 30 strain, a part of the cleavage site of fusion protein gene fragment was amplified by rt - pcr using a primer and sequenced. the sequence analysis showed this strain had low homology with f4ge9 and cso. a phylogenetic tree based on the published sequences of ndv reference strains was constructed and showed the isolated strain hbg - 1 belonged to the genotype w ndv, a novel genotype ndv
為了進一步探尋分離株與標準株的異同，又採用rt - pcr方法，擴增獲得分離株f _ o裂解位點附近的基因片段，經測序后與國際上已發表的新城疫病毒的核酸序列進行比較，結果表明其與標準株和疫苗株之間的同源性較低，僅為82 86之間。經系統發育進化樹分析后，判定該分離株為新城疫病毒（ ndv ）基因型。運用計算機軟體對其裂解位點處的氨基酸序列進行預測和分析，結果表明該分離株為新城疫病毒強毒株並具有基因型的典型結構特徵。
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