of those whose exposure cannot be determined , serology results show that more than half were negative for coronavirus .
他续说：至于那些未能确定感染途径的个案，血清测试结果显示当中过半数的个案最终对冠状病毒呈阴性反应。As in other coronaviruses, nucleocapsid (N) is one of the most crucial structural components of the SARS-CoV.
和其他的冠状病毒一样，SARS病毒的N蛋白是病毒最重要的结构组分。Canine coronavirus is a gastrointestinal disease that is usually asymptomatic or with mild clinical signs. The signs are worse in puppies.
犬冠状病毒病是一种胃肠道疾病，通常无症状或仅有轻微的临床症状。幼犬发病时症状比较明显。Spike protein of coronavirus is considered to be the major antigen and contains many potential antigenicity domains.
突起蛋白是冠状病毒的主要抗原，包含许多抗原决定簇。The result of animal regress experiment shows that the virus can induce typical clinical syndrome of CCV illness. 2.
动物回归实验表明，本次分离病毒株可以引起试验犬出现典型犬冠状病毒病症状。Besides, this corona virus is a new kind of virus which belongs to a mutated strain and our body cannot recognize it.
除此以外，冠状病毒是一种新型的变异病毒，它不能被我们的身体识别。更详细。Singapore has a laboratory-confirmed case of SARS coronavirus (CoV) infection.
新加坡发现一例实验室确证SARS冠状病毒感染病例。When WHO found the pathogeny was Coronavirus but not Chlamydia, many sick persons had died as the best cure opportunities were missed.
等到WHO发现病原不是衣原体，而是冠状病毒时，时机已经错过，得病的人、死的人已经很多了。Objective To explore the etiology of SARS that it could be coronavirus infection combined with Histoplasma Capsulatum.
目的探讨SARS病原学的冠状病毒复合组织胞浆菌感染的问题。