Fig. 1

Chondrosarcoma cell lines exhibit variable γ-radioresistance. a Colony forming assay of SW1353 and JJ012 chondrosarcoma cells. b Viability of JJ012, SW1353 and CH2879 cells, 72 h after treatment with increasing doses of γ-radiation measured using presto blue viability reagent. c Normalized cell index of CH2879, JJ012 and SW1353 cells irradiated to 0 (black), 2 (blue) or 4 Gy (green) radiation. d, e γH2AX foci/cell in CH2879, JJ012 and SW1353 cells 2 and 24 h after 5 Gy radiation.****P values < 0.0001, *P values < 0.05