经过一段时间，形成一种混合物，它包含实验室毒株的内部成分以及大流行毒株的外部成分。
After a while, a hybrid is formed which contains the inner components of the laboratory strain, and the outer components of the pandemic strain.
还将把病毒送至世界卫生组织的参考实验室，以便与亚洲的人类H5N1病毒分离株进行比较。
Viruses are also being sent to WHO reference laboratories for comparison with human H5N1 isolates from Asia.
加的夫公共健康实验室从一株分离株中克隆了病毒的拷贝，让我们去识别能引起体外病毒不稳定的基因。
Cloning a copy of the virus from a strain isolated by Cardiff Public Health Laboratories has enabled us to identify the genes causing the instability of the virus outside the body.
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