Figure 1.

The cell viability following standardized extract of Ginkgo biloba (EGb761) treatment of H295R cells. The WST-1 assay was used to evaluate cell viability and exclude cytotoxic concentrations of EGb761. The cells were seeded and incubated for 24 hours, and various concentrations of EGb761 were added. After 24 hours of incubation, the medium was removed and the WST-1 reagent was added to each well. The absorbance was measured at a wavelength of 440 nm with a reference wavelength of 690 nm. The results are expressed as the mean±standard deviation of three separate experiments. Values are significantly different from the control: ^*p<0.05, ^**p<0.01.