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Different liposomal designs for targeted drug delivery. Drugs can be incorporated within the aqueous core or bilayer membrane depending on the drug properties. The degree of PEGylation (the dimensions shown are for PEG2000) can be adjusted to vary the stealth characteristics of the liposome formulation. Ligands can be introduced to present on the surface to manage specific binding while drug release rate can be controlled by designing in sensitivity to specific stimuli.
