Exosomes are tiny membrane-bound extracellular vesicles produced in the endosomal compartment of most eukaryotic cells and can be found in abundance in many and perhaps all body fluids including blood, urine, cerebrospinal fluid. These tiny vesicles contain distinct subsets of proteins, lipids, DNA, and RNA (including microRNAs, mRNAs, lncRNAs and other ncRNAs). Exosomes have a unique biogenesis pathway via multivesicular bodies and may play an important role in cell-to-cell signaling, thereby influencing the immune system and mediating adaptive immune responses to pathogens and tumors. The delivery of their cargo RNA molecules is a mainstream hypothesis to explain biological effects. exosome rna sequencing https://rna.cd-genomics.com/exosomal-rna-sequencing.html