The distribution of chromosomal abnormalities in murine leukemias. The distribution of chromosomal abnormalities in (A) PML-RARA, (B) PML-RARA/BCL2, (C) PML-RARA/FLT3^W51, and (D) PML-RARA/IL3R (βcV449E) mice reveals a defined spectrum of numeric abnormalities. Chromosome gain is depicted by green bars on the right of each chromosome, and chromosome loss is depicted by pink bars on the left. Each bar represents a single case.