Exosome is a nanoscale extracellular vesicle produced by fusion of intracellular multivesicular bodies with cell membranes.They are widely distributed in serum,urine,saliva and other biological fluids.As an important transfer vector for intercellular communication and genetic material,exosomes can directly stimulate target cells through receptor-mediated interactions or through the transfer of various biologically active molecules such as cell membrane receptors,proteins,mRNAs and miRNAs,thereby exerts its ...