Figure 9: Synergistic effect of curcumin and radiation on clonogenic cell death in PC3 cells. Cells were treated with curcumin (2.5, 5, and 10 µM) alone, radiation (2 Gy) alone or in combination of curcumin with radiation. A: Bar chart showing percent survival in different experimental groups (*p<0.05). B: A representative clonogenic assay showing different experimental groups.