Such antibody levels naturally decrease over time.

这种抗体水平会随着时间推移自然降低。

Typically, it takes a few weeks for antibody levels to peak.

一般情况下，抗体水平会在几周后达到峰值。

And they're showing that the antibody levels are declining over time.

他们表明抗体水平随着时间的推移而下降。

But getting down to the individual level, there are wide swings in antibody levels after natural infection.

但说到个人，自然感染后的抗体水平的差异幅度很大。

While all of the vaccines have been shown to boost antibody levels after vaccination, there are some differences.

虽然所有疫苗都证明注射后能提高抗体水平，但也存在差异。

Researchers measure the blood antibody levels of the mice, and specifically look for antibodies being produced that would combat the virus.

他们会测量小鼠血液中的抗体水平，特别是疫苗接种后机体所产生的能抵抗目标病毒的抗体。

For a diagnosis of Tularemia you need a four-fold increase in serum antibody levels.

要诊断是兔热症，她的血清抗体等级需要有4个部分的增长.

94 percent was her antibody level, which means basically she only matches with about 6 percent of the population.

94%是她的抗体水平，这意味着基本上她只与大约6%的人口相匹配。

They take blood samples over time, and they see how their antibody level's doing when they challenge them with a virus in the laboratory.

他们会在一段时间内采集血样，他们在实验室里观察当抗体与病毒处于对抗状态时抗体水平的变化。

Antibody levels may decline (and that's expected), but your immune system also has B cells and T cells that can remember and fight off an infection.

抗体水平可能会下降（这是预料之中的），但您的免疫系统也有 B 细胞和 T 细胞，它们可以记住并抵抗感染。