由于引入了非本地的捕食者和病原体，已经有许多本土物种灭绝的记录，证据确凿。
There have been numerous well-documented extinctions of indigenous species caused by the introduction of non-indigenous predators and pathogens.
许多超富集植物被发现于热带地区和亚热带地区，在那里，高浓度金属元素的积累可以为植物提供保护来对抗以植物为食的昆虫和细菌病原体。
Many are found in tropical and subtropical areas of the world, where the accumulation of high concentrations of metals may afford some protection against plant-eating insects and microbial pathogens.
只要吸入病原体，你就会被感染。
It first infects you because you breathe in some of the infectious agents.
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。
As observed with the chickens, the filterable agent, a virus, could seldom be recovered from the malignant tumor which it had induced.
引起感染的常见病原体为流感嗜血杆菌、肺炎链球菌和卡他莫拉菌。
Caused by common pathogens were Streptococcus pneumoniae, Haemophilus influenzae and Moraxella bacteria Mora.
这种病原体引起了一种叫做“鸡疫”的疾病。
取而代之的是针对不同病原体的不同T细胞，它们将会在显性免疫出现之前被挑选出来进入受累的淋巴结。
Instead, a separate winner for each strain is picked in each affected lymph node before immunodominance can come into play.
一旦发现病原体，就会把它吞噬掉。
耐药病原体已经加速出现和蔓延。
The emergence and spread of drug-resistant pathogens has accelerated.
“它们不是有害的病原体，”她说到。
不断变异和适应是病原体的生存机理。
Constant mutation and adaptation are the survival mechanisms of pathogens.
这些病原体包括了病毒、细菌和真菌。
接着病原菌产生耐药性。
传染病病原学的新依据。
她认为其病原体符合该期刊所有的出版标准。
She thought the pathogen fitted all the journal's criteria for publication.
2003年年初，SARS来了，病原是什么？
At the beginning of 2003, no one knew what the pathogeny of SARS was.
你的免疫系统发现你的肺部有病原体后释放组胺。
Your immune system spots pathogens in your lungs and releases histamine.
这些病毒属于导致人类感染的已知最剧烈的病原体。
These viruses are among the most virulent pathogens known to infect humans.
还有一些发现指向了病毒和真菌病原体的协同作用。
Some findings pointed to viral and fungal pathogens working together.
微孢子虫是一种蜂类病原体，它也困扰欧洲的大黄蜂。
Nosema bombi is a bee pathogen that has also afflicted European bumble bees.
但马铃薯木虱只是传播媒介，真正的病原体尚不清楚。
But the potato psyllid is merely the vector. The actual pathogen is still elusive.
在澳洲，吸烟是可避免的单一致死致病原因。
Smoking is the largest single preventable cause of death and disease in Australia.
但是这些肉必须煮熟，在你吃前必须杀死所有有害病原体。
But the meat must be cooked, which will kill any noxious pathogens before you eat it.
当我们给这些病人打抗生素我们是希望这些病原体消失的。
So when we treat these diseases with antibiotics, our hope is to see the pathogen disappearing.
毁林地区野生动物与人类的接触增加，导致病原体的传播。
Deforested areas increase contact between wildlife and humans and affect pathogen transmission.
病原体始终在进化，使免疫系统失去辨认它们的能力。
Pathogens continually evolve, confounding the ability of the immune system to recognize them.
不过，它可以比较好地区别已康复患者与病原携带者。
But it is better at distinguishing recovered patients from those still infected.
这样的受体可以是蛋白质、酶、膜通道或外来病原体的一个区域。
Thus a receptor may be a protein, enzyme, membrane channel, or a region of a foreign pathogen.
疟疾的病原物---疟原虫，已经对化学处理有了抗性。
The malaria causing parasite, Plasmodium, has already developed resistance to chemical treatments.
疟疾的病原物---疟原虫，已经对化学处理有了抗性。
The malaria causing parasite, Plasmodium, has already developed resistance to chemical treatments.
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