The cells secrete extracellular vesicles (EV) which probably has its origins endosomal, or from evaginations of the plasma membrane. The former is usually called exosomes,
![Somicet Research on Stem Cells and Regenerative Medicine](https://www.celulastroncales.org/wp-content/uploads/2020/08/fxf.jpg)
Somicet Research on Stem Cells and Regenerative Medicine
Sociedad para la Investigación en Células Troncales