Comparison of the viability of WB-F344 (filled circles) and WB-ras cells (open circles) 3 h after combined treatment with PTM and μsPEFs, depending on the treatment order.

Asterisks mark statistically significant differences in cell viability between the two cell lines for the treatment conditions that are described at the bottom of the graph. The graph shows mean values of three independent experiments performed in triplicates ± standard errors. Dashed lines indicate the rates at which respiratory activities decreased with increasing field strength.