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Confocal fluorescence microscopy images of HepG2 cells treated with naked FAM oligonucleotides, PEI/FAM oligonucleotides, PCP/FAM oligonucleotides, and PCPH/FAM oligonucleotides, respectively.
Notes: The cell nuclei were stained with Hoechst 33342 (blue). FAM-labeled small interfering RNA appears in green. Magnification was 400×.
Abbreviations: FAM, fluorescein amidite; PEI, polyethyleneimine; PCP, polylactic-co-glycolic acid/cetylated PEI; PCPH, PCP/hyaluronic acid.
