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Representative atomic force microscope (AFM) images of different nanocarriers: supermagnetic iron oxide (SPIO) nanoparticles; poly(ethylene glycol) (PEG); quantum dots (QD); poly(propyleneimine) (PPI) dendrimers; poly(amido amine) (PAMAM) dendrimers; polymeric micelles; “neutral” liposomes; cationic liposomes and mesoporous silica (MS) nanoparticles.
