Leukemia progression plots (A, C, E) showing %hCD45+ cells in PB of individual mice engrafted with B-lineage subtype ALL (ALL-2, ALL-4, ALL-19) over time. Kaplan-Meier plots (B, D, F) of EFS over time for B-lineage subtype ALL-engrafted mice. Dotted lines indicate vehicle-treated control animals while solid lines indicate CPX-351-treated mice.