Figure 3

Growth inhibition of LU-HNSCC-4 cells exposed to varying concentration of DFMO (●) or DENSPM (■). Cells were seeded in 96-well plates and 24 hours later DFMO or DENSPM were added at the indicated concentrations. The cells were incubated with the drugs for 48 h. Thereafter the drug containing medium was removed and the cells incubated for 72 h before cell growth was evaluated with an MTT assay. Values represent averages of four or more experiments, and error bars indicate SEM.