Fig. 2.

The effect of norwogonin, oroxylin A, mosloflavone, and ribavirin on EV71-induced cytopathic effect. The virus-infected cells were treated with 50 μg/mL norwogonin, oroxylin A, mosloflavone, and ribavirin. After incubation at 37°C in 5% CO₂ for 48 h, the cell viability was evaluated using the sulforhodamine B (SRB) assay, and the morphology of cells was determined using a microscope. (A) Non-infected cells; (B) non-infected cells treated with norwogonin; (C) non-infected cells treated with oroxylin A; (D) non-infected cells treated with mosloflavone; (E) non-infected cells treated with ribavirin; (F) EV71-infected cells; (G) EV71-infected cells treated with norwogonin; (H) EV71-infected cells treated with oroxylin A; (I) EV71-infected cells treated with mosloflavone; (J) EV71-infected cells treated with ribavirin.