ABT-737 treatment-induced differential regulation and activation of pathways implicated in cell survival and proliferation assayed by gene expression profiling. Exon specific microarray heat maps of Sca-1⁺ purified spleen cells from untreated (day 0) and ABT-737 treated (postday 33) of AML mice relative to WT FVB/N. Each row (1-6) represents an independent mouse (n = 3) in each group (GEO accession no. GSE48601).