方法用狗肾传代MDCK细胞培养法观察儿茶提取物抑制甲型流感病毒的致细胞病变作用；
Methods The inhibitory cytopathic effects (CPE) of catechu extract on influenza A virus were observed by MDCK cell culture techniques.
前言：目的：观察不同稀释度的含清肺口服液的血清在组织培养上对仙台病毒、腺病毒3型和腺病毒7型致细胞病变作用的影响。
Objective: Observe the effects of the serum medicated with different concentrations of Qingfei Oral Liquid on the cell lesion of Sendai virus, adenovirus of type 3 and 7 over tissue culture.
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