Mishrq等(1994)应用聚丙烯酰胺凝胶电泳对鸡痘病毒疫苗株(TVRJ)和两株自然分离株进行 蛋白质分析,结果表明,三株病毒在75%~15%凝胶中电泳,考马斯亮蓝染色分别产生45、 37 、39三条带。
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即使在感染你的时候,感冒病毒也会发生变异,而且新的病毒毒株经常出现,以至于当制药商研制出针对其中一种变异的疫苗时,血清已经过时了。
Colds mutate even while they're infecting you, and new strains pop up so often that by the time drug-makers create a vaccine against one variation, the serum is already out of date.
尽管科学家还在研究导致这次猪流感的病毒株,专家们怀疑现有的季节性疫苗能否有效抗击它们。
Although scientists are still studying the swine-flu strain responsible for the current outbreak, experts doubt that existing seasonal vaccines can effectively combat it.
如果我们能研制一种对所有流感病毒株都有效的疫苗,我们就可以预防年度季节性流感及偶见的流感大流行,就像其它那些疾病一样。
If only we could develop a vaccine that was effective against all strains of flu, we might prevent both annual epidemics and occasional pandemics like the one now under way.
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