The swab test, which involves taking a mucus sample from the nasal cavity, can distinguish between swine flu (H1N1), A and B strains of the virus.
这个棉签试验，需要从鼻腔采取一些粘液样本，能够区分出猪流感(H1N1)中的A和B病毒株，伦敦南部的圣乔治医院现在就是用流感Xpert试验。
Another 30 patients who did not receive a cotton ball placed in the anterior nostrils after removing the nasal stents in the same period were put in group B.
其中A组30例患者在取出鼻腔填塞物后于前鼻孔放置棉球以减少鼻腔通气；
Another 30 patients who did not receive a cotton ball placed in the anterior nostrils after removing the nasal stents in the same period were put in group B.
其中A组30例患者在取出鼻腔填塞物后于前鼻孔放置棉球以减少鼻腔通气；
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