Fig 4. Light-dependent cytotoxicity of Dox-EDANS.
Cells were treated with 10 μM of Dox-EDANS with (solid diamonds) or without (open squares) light for the specified times. After 2 h, the cells were washed with fresh media and allowed to grow for 72 h. The fraction of surviving cells was evaluated using the absorbance of the formazan product of MTT reduction. Error bars denote one standard deviation from the mean.