Figure 3.

Dose-response effect of extracts from control and strontium-stimulated soybeans on viability of HepG2 liver cells assessed using tetrazolium reduction assay. The cells were treated with vehicle (DMSO, 0.1%) or with increasing concentrations of shoot extracts from (a) control and (b) 2 mM Sr²⁺-stressed soybeans. Ten percent solution of DMSO was used as a positive control for cytotoxicity. Viability of vehicle-treated cells was set at 100. Data show the average ± SD of three independent experiments, each performed in triplicate wells.