Fig. 2
Measurement of antiviral activity of O. sanctum and A. arabica leave extracts against H9N2 virus using HA assay. a Dose-dependent virucidal activity; b Time-dependent therapeutic activity; c Dose-dependent prophylactic activity. The virus control group included 500 EID50/0.1 ml of H9N2 virus incubated with 0.1 ml PBS for 2 h at 37 °C. The HA titer were expressed as log HA titer