Fig. 4From: The potential use of mesenchymal stem cells-derived exosomes as microRNAs delivery systems in different diseasesa 3D schematic structure and contents of MSCs-EXOs. b EXOs usually contain dynamic loads, including different proteins, enzymes, lipids, RNA (such as miRNAs), and DNA. Moreover, MSC-EXOs carry and deliver different hydrophobic and hydrophilic drugsBack to article page