As observed with the chickens, the filterable agent, a virus, could seldom be recovered from the malignant tumor which it had induced.
在鸡身上观察到，一种叫滤过性病原体的病毒，很少能从它诱发的恶性肿瘤中恢复过来。
Sat-RNA of CMV is a subviral agent, which depends on its helper virus to replicate and cell to cell diffuse.
CMV的 Sat-RNA是一种亚病毒剂，取决于其辅助病毒的复制和细胞间的扩散。
New diseases are, by definition, poorly understood when they emerge, and this is most especially true when the causative agent is an influenza virus.
从定义上讲，人们对新出现的疾病了解很少，从病原体是流感这一点上可以看到这一点。
Biological preparations composed either of a harmless variety of a disease-causing agent such as a virus or bacteria, or of proteins derived from such an agent.
由无害的多种致病介质如病毒或细菌或来自这些介质的蛋白质组成的生物制品。
Following confirmation of Marburg virus as the causative agent, on 21 March, WHO sent its senior epidemiologists to Uige to assess the situation and organize an initial emergency response.
在确认马尔堡病毒为致病病原体之后，世卫组织于3月21日向威热派出其高级流行病学家以评估事态和组织初期紧急应对。
Polyoma virus: Minute infectious agent normally present in extremely small amounts in wild mice without causing obvious ill effects.
多瘤病毒：存在于野鼠身上、数量极少、致病力不强的一种感染性小病原体。
Agent for inhibiting membrane virus reproduction, method for the production thereof, pharmaceutical composition and method for inhibiting viral infections.
抑制膜病毒复制的药物，其生产方法，药物组合物和抑制病毒感染的方法。
Conclusion Virus is the most common agent for newborn pneumonia and aetiology diagnosis of newborn pneumonia cannot be presumed only by clinical manifestations.
结论本次调查新生儿肺炎病原以病毒多见，新生儿肺炎临床症状不典型，难以依靠临床表现作出病原学诊断。
The condition or causative agent, such as a bacterium, fungus, or virus, that results in blight.
如细菌、真菌或病毒等导致枯萎病的条件或起因。
Biological weapons, by definition, are any infectious agent, such as a bacterium or virus, used deliberately to inflict harm on soldiers and civilians alike.
从定义来看，生物武器是指任何蓄意用来伤害士兵和老百姓等的传染手段，如细菌或病毒等。
Virus: Microscopic, simple infectious agent that can multiply only in living cells of animals, plants, or bacteria.
病毒：微小、简单的传染因子，仅在动物、植物、细菌的活细胞中能够繁殖。
The vaccinia virus is a non-dangerous virus used in the smallpox vaccine because it is related to the variola virus, which is the agent of smallpox.
痘苗病毒使用在牛痘苗时是无害的，因为它与作为传播天花媒介物的天花病毒相关。
Pseudorabies is caused by Pseudorabies virus(PRV), which is a member of family herpesviridae and is the agent of acute infectious disease in many domestic and wild animals.
伪狂犬病是由伪狂犬病病毒引起的多种畜、禽及野生动物的一种以发热、奇痒、脑脊髓炎为主要症状的急性传染病。
Dual infections are common, and all possible causes should be excluded before accepting that the first virus identified is the causal agent.
双重感染很常见，在接受第一种确定的病毒为病原体之前应该排除所有的可能原因。
There are early Suggestions that the virus may be a secondary infection more likely to invade when hosts already are dealing with another infectious agent.
早期迹象表明，在宿主已经患另一种感染时，这种病毒可能更容易作为二次感染入侵。
METHODS:Newcastle dis-ease virus(NDV)vaccine was used as model drug, and PLGA as carrying agent to prepare NDV-PLGA oral microspheres by W/O/W emulsifying-solvent evaporation technique.
方法：以鸡新城疫病毒（NDV）作为疫苗模型药物、乳酸-羟基乙酸共聚物（PLGA）为载体材料，采用W/O/W复乳-溶剂挥发法制备NDV-PLGA口服微球。
Classical swine fever virus (CSFV) is the causative agent of classical swine fever, a highly contagious and often fatal disease of domestic pigs.
猪瘟是由猪瘟病毒引起猪的一种高度接触性和致死性传染病。
The authors note that M pneumoniae was the identified agent twice as often as enterovirus among children and 7 times as often as herpes simplex virus, type 1.
作者指出，在患儿鉴别出的病原中，肺炎支原体是肠病毒的2倍，是一型单纯疱疹病毒的7倍。
Once bound to the cancer cell, the virus particle would release an anti-cancer agent that has been carried as an internal cargo.
一旦绑定肿瘤细胞后，病毒颗粒就可以释放出其内部携带的抗肿瘤物质。
Once bound to the cancer cell, the virus particle would release an anti-cancer agent that has been carried as an internal cargo.
一旦绑定肿瘤细胞后，病毒颗粒就可以释放出其内部携带的抗肿瘤物质。
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