The human body is made up of cells. Cells release extracellular vesicles (EV) to remove waste and to transport and deliver cargo, such as receptors and genetic information, to other cells. Extracellular vesicles have promising applications. However, clinical applications of EV have not been realised yet, because current detection techniques lack the sensitivity to detect the majority of EV. Edwin van der Pol focuses on improving the detection of extracellular vesicles.