Fig. 3

Schematic representation of the different types of liposomal drug delivery systems. A Conventional liposomes consist of a lipid bilayer surrounding aqueous compartments, composed of phospholipids and cholesterol unmodified B PEGylated liposomes have a hydrophilic polymer coating (PEG) on the surface of the liposome that modifies in vivo characteristics and behavior via steric stabilization. C Ligand-targeted liposomes can affect specific targets via ligands attached to the surface or terminal end of the attached PEG chains. D Theranostic liposomes are a single system consisting of a nanoparticle, a targeting element, an imaging component, and a therapeutic component. Figure has been created using Biorender