Our laboratory studies extracellular vesicles (EVs). EVs, which are secreted by all kinds of cells from archaea to mammal, are attracting worldwide attention due to inter-species signal transduction and various internal biomaterials. We are developing the world\'s best technology for the separation and purification of EVs, and progressing research to analyze the characteristics of various EVs-related genomes and proteins. In recent years, we are focusing on the inhibition or promotion of cancer by the outer membrane vesicles of bacteria, and the diagnosis and treatment of diseases through EVs that obtained from the patient\'s bio-fluid.