26 of 61 candidate components are commercially available in Sigma Aldrich (St. Louis, MO, USA), SUPELCO (Bellefonte, USA), China National Institutes for Food and Drug Control (Beijing, China), Zhongxin Innova Laboratories (Tianjin, China), Sichuan Weikeqi Biological Technology Co., Ltd. (Chengdu, China), Sima-Lab (Tianjin, China), and Yifang Technology (Tianjin, China). The antiviral potentials of these 26 components were tested by the cytopathic effect (CPE) method in vitro against RSV A2 virus to evaluate the identification accuracy of main effective components.17,18 Briefly, HEp-2 cells were seeded in a 96-well plate
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