Fig. 1. Representation of various vesicular structures: (A) viral capsid, (B) liposome (or lipid-based vesicle), (C) stealth liposome (with additives such as cholesterol and PEG), (D) polymersome (or polymer-based vesicle), (E) dendrimersome (or dendrimer-based vesicle). For clarity, only single-bilayer vesicles were represented in this figure.