The capsule is considered an important virulence factor since the strains that lack a capsule are less virulent.

被认重要的毒力因子，因的菌株毒力相对较弱。

This capsule is a major virulence factor because of its antiphagocytic ability.

具有抗吞噬的作用，所以其主要的毒力因子。

Now coronaviruses that circulate among the humans are typically benign, and they cause a quarter of all common cold illnesses.

通常情况下，人与人之间传播的毒力相对弱的冠状病毒，约占普通感冒病因的1/4。

He then heat killed the smooth, what would be the virulent strain.

随后，他将光滑型、即原本具有毒力的菌株加热灭活。

H. pylori can make over 1,500 proteins, many of which are dedicated to maximizing its virulence.

幽门螺旋杆菌能制造超过1,500种蛋白质，其中许多专门用于增强其毒力。

Some bacteria can also have another extra layer on top of the cell wall called a capsule, which is a major virulence factor.

一些细菌还有包裹在细胞壁外面的，主要的毒力因子。

As a result, a less lethal myxo virus spreads baby viruses to more rabbits than did the original, highly virulent myxo.

因此，与最初的高毒力粘液病毒相比，致命性较低的粘液病毒将婴儿病毒传播给更多的兔子。

However, Candida is also special and has quite a number of virulence factors that facilitate its ability to infect us and cause disease.

然而，念珠菌也具有特殊性，拥有多种毒力因子，这些因子增强了其感染我们并引发疾病的能力。

What we're finding is that when they enter into the lysogenic cycle, especially in bacteria, you can actually change the virulence of those bacteria.

我们发现， 当它们进入潜伏循环，特别在细菌中时， 实际上可以改变这些细菌的毒力。

Now, Klebsiella pneumoniae has a number of virulence factors that are like assault weaponry that help it attack and destroy the host cells and evade the immune system.

肺炎克雷伯杆菌具有多种毒力，可以攻击宿主细胞，并逃避免疫。

It has a bunch of virulence factors such as capsule, LPS, pili, and a siderophore, which helps the bacteria to attack and destroy the host cells and evade the immune system.

它具有多种毒力因子，如、脂多糖、菌毛以及铁载体；铁载体帮助细菌攻击宿主，破坏机体细胞，并逃避人体免疫。