Interferon is probably the most significant nonspecific antiviral substance. 干扰素可能是最重要的一类非特异性抗病毒物质。
On Sunday, Xinhua reported that no trace of toxic or viral substances were found in blood samples taken from victims. 在星期日,新华社报道,在从受害者提取的血液样本中没有发现有毒或病毒物质的迹象。