1. Pathogeniciy of 拟态弧菌的致病作用与其在生长繁殖过程中产生的毒力因子密切相关。
2. The researchers also found that high-salt conditions increased transcription of two genes responsible for the virulence of H. pylori. 研究人员还发现，高盐环境使得与幽门螺旋杆菌危害性相关的两个基因转录增加。
3. The other mutation with a significant effect on virulence has been seen in the NA gene of two influenza virus strains that infect mice. 另一种对病毒毒性具有重要影响的突变，存在两种感染小鼠的流感病毒株的na基因上。
英英解释
n.
1. extreme harmfulness (as the capacity of a microorganism to cause disease)
2. extreme hostility
