Fig. 2From: Statistical and radiobiological analysis of the so-called thyroid stunningCell survival fraction Sf and TCP measured by Kappler et al. after uniform irradiation of sarcoma megacolony assays (5 × 104 cells) (curves Lu-siRNA in Figs. 5 and 6 of [31]: cells were radio-sensitized by RNA transfection). The much larger number of cells in actual lesions (>107→Sf < 10−8 for TCP = 0.9) still dramatically widens the width of the valley in between the two curves as shown in Fig. 1 Back to article page