Figure 3.

Cytotoxicity and antiviral activities of myricetin. (A) The cytotoxicity of myricetin on CEK cells (*: P < 0.05). (B) The inhibition rate of myricetin at different concentrations against IBV. The inhibition rate was determined as the percent of cell viability in treated cells compared with untreated cells. The different symbol on the columns represent the significant differences compared with blank control (*: P < 0.05; **: P < 0.01; ***: P < 0.001). Abbreviations: CEK, chicken embryo kidney; IBV, infectious bronchitis virus.