Figure 2From: Comparison of human chordoma cell-kill for 290 MeV/n carbon ions versus 70 MeV protons in vitroCell survival curves at each depth in water. Cell survival assays were conducted with stacked OptiCell™ cell culture systems, irradiated with 290 MeV/n carbon ions: A-C and 70 MeV protons: D-F. Error bars indicate standard errors of the means from as many as four independent experiments.Back to article page