Definition: Exosomes are small extracellular vesicles (30-150 nm) released by cells into the extracellular space.
Function: They carry a variety of biomolecules, including proteins, lipids, and RNAs, and play a role in intercellular communication, transferring signals and materials between cells.
Mechanism: Exosomes can be taken up by other cells, influencing their behavior by delivering their cargo, which can modulate various biological processes.