关于种属屏障(species barrier)的研究资料是大量的，实验结果表明，小鼠PrP基因在254个氨基酸中有16个不同于田鼠基因，给转基因小鼠接种小鼠PrPsc时，会制造重...
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H5N1 avian influenza virus can infect not only birds but also human and other mammalian animals, crossing the species barrier, posing severe threat to human health.
H5N1亚型禽流感病毒(avian influenza virus, AIV)不仅可以感染禽类,而且可以跨越种属屏障感染人或其他哺乳动物,严重威胁人类健康。
参考来源 - 同一人源H5N1禽流感病毒株中大、小斑病毒致病性差异研究·2,447,543篇论文数据，部分数据来源于NoteExpress
On rare occasions, avian influenza viruses have crossed the species barrier to infect humans.
在极少数情况下，禽流感病毒已跨越物种屏障，感染人类。
Mankind, it seems, was just unlucky that this virus made the leap across the species barrier.
似乎这种病毒得以跨越物种的障碍传染到人类身上仅仅是出于人类的不幸。
Pigs are flu sponges, capable of contracting both bird and human viruses that can jump across the species barrier, Richt says.
里希特说，猪是流感海绵，能够跨跃物种界线吸取人类和禽类的流感病毒。
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