The cell lines differed widely in their clonogenic survival after radiation, (surviving fraction at 2 Gy: SF2=0.18-0.82).
Survival was plotted as surviving fraction ± SEM.
Each point on the survival curve represents the mean surviving fraction from at least three replicates.
Each point on survival curves represents the mean surviving fraction from at least three independent experiments.
Each point on the survival curve represents the mean surviving fraction (SF) from at least three dishes.
The survival curves were fitted to a linear-quadratic equation: surviving fraction = exp[−(α D + β D)].
The relationship between surviving fraction and drug concentration was plotted to obtain the survival curve of cancer cell lines.
The relative survival of tumour cells after drug therapy was expressed as a surviving fraction (SF).
The surviving fraction of untreated cells (control group) was set as 100%.
(a) Surviving fraction of HeLa cells as a function of the concentration of TiO2 nanoparticles.
