 Exosomes are tiny vesicles released by cells into the extracellular environment. These vesicles contain proteins, nucleic acids, lipids, and other molecules that can be transferred between cells, allowing for communication between cells. Research has shown that exosomes play important roles in cell-to-cell communication, immune regulation, and development. Exosomes have been used in clinical trials as a way to deliver drugs, as a diagnostic tool, and as a potential therapy for a variety of diseases. Despite their potential, there are still many unanswered questions about how exosomes work and what role they play in the body. This article was authored by Jaffa Rizé, Mariam Fegge, and Tahira Eta-Madi.