Exosomes are extracellular vesicles (EV) derived from endosomes, ranging in size from 30nm to 150nm. Exosomes can be secreted by many cells. In fact, all living cells use exosomes as communication mediators. Exosomes carry cell-specific proteins, lipids, and nucleic acids, which can be selectively absorbed by recipient cells. Although exosomes were discovered more than 30 years ago, it is only in recent years that the scientific community has begun to attribute a series of promising features of exosomes to them. Today, up to 18000 articles related to exosomes have been published on PubMed.gov, and a surprising number of articles released in the past five years accounted for 74%.