What are multivesicular bodies?

Multivesicular bodies (MVBs), also known as late endosomes, are membrane-bound organelles that contain smaller intraluminal vesicles (ILVs) loaded with substances such as lipids, proteins, and nucleic acids. During exocytosis ILVs are released into the extracellular space as exosomes and carry out specialized functions such coagulation, intracellular signaling and waste management.