此外，流感毒株的类型，品系和致病力以及免疫应答的基本特征，这些都在判定病毒产生耐药的可能性方面起了一定的作用。
In addition, the type, strain, and virulence of the influenza strain and the nature of the immune response all appear to play a role in determining the likelihood of drug resistance arising.
基本的免疫原性滴定终点可以4倍或者更大的对在3种疫苗品系接种之前和接种后28天增加血清血凝素抑制剂抗体。
Primary immunogenicity end points were the rates of 4-fold or greater increases in serum hemagglutinin inhibition antibody to each of the 3 vaccine strains before and 28 days after inoculation.
研究者在每个大鼠品系建立实验性自身免疫性脑脊髓炎动物模型，并检测疾病进展过程中这些动物都有哪些变化。
The researchers established EAE in each mouse strain and examined what was common to all of the animals when they developed disease.
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