Table 1.

Cytotoxicity of L-OHP in parental and their L-OHP resistant variants (Colo320/Colo320R and HT-29/HT-29R)

Cell lines	Colo320	Colo320R	HT-29	HT-29R
IC50 (μg/ml)	7.546 ± 0.5970	20.85 ± 1.069	22.31 ± 2.717	56.80 ± 5.065

Values are means ± SEM in triplicate, in 3 separate experiments, after 24 h exposure of the cells to varying concentrations of L-OHP (0.001-300 μg/ml).