Figure 3

Effects of D1 and D6 on the clonogenic growth of melanoma (LB24) and neuroblastoma (GI-LI-N) cell lines. Cells have been suspended in drug-containing medium at different concentrations (0-20 μM) of D1 and D6 for 4 hours and then washed, seeded with drug-free medium in a 12 well-plate and let grow up to 14 days. Cell colonies were stained with crystal violet, counted and photographed as described in M& M.