AEtr cells are aneuploid. Mitotic chromosome counts from vector control or AEtr cells. Cells from vector control cells or 2 AEtr lines (AEtr#1, AEtr#2) were used to generate metaphase chromosome spreads. Chromosomes from 54 metaphase cells per line were counted. The histogram indicates the number of vector control or 2 different AEtr pools containing various ranges of chromosomes per cell.