Figure 4.

Cancer cell lines were plated in 24-well plates as described in the Methods. Culture was supplemented with 5 μM gossypol/ApoG2 with or without metal chelator neocuproine (Neo, 50 μM). Colonies (>50 cells), after appropriate culture time (22 days), were counted. Experiments were done in quadruplicate and mean values are reported. p < 0.01 when compared to untreated control cells.