蛇毒、胞毒素及植物毒蛋白质，如蓖麻蛋白等，均具有防御功能。
Snake venom, cytotoxin and plant poisonous protein such as ricin all have the defence function.
人们发现这些伴胞体几何形状不同并且表现出形状与寄主的类型和毒素的效力有关。
These parasporal bodies have been found to vary in their geometry, and it appears that the shape is related to host range and toxin effectiveness.
实验结果表明松材线虫本身不产生毒素，在荧光假单胞菌培养液的无细胞滤液中加入无菌松材线虫未能显著改变其毒性。
Results also showed that pine wood nematode itself neither produced phytotoxin nor affected the toxicity of extracts from the culture of bacterium after the addition of it.
前言：目的确立胞磷胆碱钠氯化钠注射液细菌内毒素检查方法。
Objective: to establish a method of bacterial endotoxins test for citicoline sodium and sodium chloride injection.
目的通过试验确定三磷酸胞苷二钠注射液细菌内毒素的具体检测方法。
Objective to establish bacterial endotoxin test of Cytidine Disodium Triphosphate Injection instead of pyrogen method.
本实验室使霍乱肠毒素（CT）B亚单位基因在大肠杆菌中获得表达，并能分泌到胞外。
The recombinant plasmid pMM2 contained cholera enterotoxin B sub-unit gene CT-B were expressed in E. coli strain.
该领域国外研究热点在嗜水气单胞菌毒素的基因组结构、相关毒力因子基因克隆和序列比较以及毒素蛋白的表达和致病机理等方面。
In this study, the Aer toxin gene was cloned and expressed in prokaryotic system and the antigenicity of its recombinant protein was analyzed.
目的研究铜绿假单胞菌外毒素A（PE）的某些抗原性及其与辅助细胞的关系。
Objective Study on superantigen Pseudomonas aeruginosa exotoxin A (PE) and its relationship with accessory cell (AC).
目的：优化重组铜绿假单胞菌外毒素A（PEA）基因工程菌的发酵条件，实现PEA的高效表达。
Objective:To optimize the fermentable conditions of recombinant E. coli BL21 for high level expression of PEA.
目的：优化重组铜绿假单胞菌外毒素A（PEA）基因工程菌的发酵条件，实现PEA的高效表达。
Objective:To optimize the fermentable conditions of recombinant E. coli BL21 for high level expression of PEA.
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