It is also why every few decades a flu strain appears with the genetic novelty to evade our herd immunity and wreak global havoc.
这也是为什么每过几十年就会出现一个流感株，它有着足够的基因改变来攻克人群的免疫，掀起全球范围的混乱。
These results all gained above not only discover molecular structure of goat FSH, but also lay the groundwork for the research of genetic engineering product, immunity and application of goat FSH.
本实验研究结果，不仅揭示了山羊FSH的分子结构，而且为山羊FSH基因工程产品的研制，及开展山羊FSH免疫与应用研究奠定了基础。
Objective:The infection and clearance of HBV may be associated with many factor, such as virus itself factor, host genetic factor and immunity factor.
目的：HBV感染与清除，不同个体的差异可能与多种因素有关，如病毒本身的因素、宿主免疫因素和遗传因素等。
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