Aneuploidy. A word that does not occur in most people’s vocabulary. Nevertheless it is an important and interesting scientific subject, as well as the topic of ERIBA’s latest explanimation. This new animated video provides insight in what aneuploidy is, and why it is important for cancer research. The script for the animation is written by Floris Foijer, group leader of the Laboratory of Genomic Instability in Development and Disease at ERIBA.