Survival probability curves. A sample of a survival probability curves as predicted by the Blahut Arimoto algorithm for the cell model. Value of the parameter s = -10-2, -10-3, -10-4 Photon density ρ = 106 cm-3. Photo sensitizer (Photofrin) concentration in a cell [S0] = 5 × 1013 cm-3. Single cell oxygen concentration [3O2] = 6.06 × 1017 cm-3.