| CHO | Chinese Hamster Ovary |
| D10 | Dose to achieve 10% cell survival |
| SF2 | Survival Fraction at 2 Gy |
| LET | Linear Energy Transfer |
| RBE | Relative Biological Effectiveness |
| OER | Oxygen Enhancement Ratio |
| NIRS | National Institute of Radiological Sciences |
| HIMAC | Heavy Ion Medical Accelerator in Chiba |
| SOBP | Spread Out Bragg peak |
| ANOVA | Analysis of valiance |
| PARP | Poly (ADP-ribose) polymerase |
| FANC | Fanconi Anemia |
| NHEJ | Non Homologous End Joining |
| HR | Homologous Recombination |