Table 1. Sensitivity to calcium electroporation in vitro measured by 50% cell death.

Calcium concentration causing 50% cell death
Cell line	mM
MDA-MB231	0.37
HDF-n	0.48
H69	0.56
SW780	0.80
HT29	1.25

Calcium concentration, where 50% of cells were dead, was estimated from graphs in Fig 3 and S1 Fig. Viability of untreated control was denoted as 100%.