Fig. 4From: Discovery and evaluation of active compounds from Xuanfei Baidu formula against COVID-19 via SARS-CoV-2 MproCytotoxicity studies of acteoside by MTT assay (a and b) and antiviral activities on Omicron BA.1.1 and BA.2.3 variants in Vero E6 cells (c and d)Back to article page