BCL2 and Burkitt lymphoma: p53-impaired Burkitt lymphoma cells (all but BL2 and OKU-1 http://p53.free.fr/Database/p53_mutation_HB.html) did not increase in cell number, but as can be seen in Supplementary Fig. 1F, developed severe polyploidy/aneuploidy profiles when cell death was prevented by BCL2 overexpression.