Effect of Ko143 on the cytotoxic damage of ALA-treated cancer cells by photodynamic treatment.

<p>Cells were exposed to light (29 mW/cm²) for 10 min using a Na-Li lamp after 3 h treatment with 1 mM ALA in the presence or absence of 1 µM Ko143. Twenty-four h after irradiation, the MTT assay was performed. Results represent the mean ± SD of three independent experiments. **<i>P</i><0.01 vs. control. †<i>P</i><0.01 vs. ALA-treated.