Fig. 1.
Exosome composition and content. Exosomes are bilyared vesicular structures that carry virtually all types of signal transduction proteins, structural proteins, lipids, enzymes, MHCs, RNAs, non-coding RNAs. RABs, EGFR, PI3K and CDC42 are all part of the Ras network and support exosome formation as well as are part of exosome structure.