Figure 3. Combination treatment of vincristine and (-)-hydnocarpin.
(-)-Hydnocarpin alone or in combination with 1.5 or 0.75 nM vincristine was incubated with 697 cells for 48 h (n = 3). Viability was determined by the MTS assay and results were calculated relative to untreated cells. Error bars represent the standard deviation of three independent experiments.