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NS-TEM (negative-stained transmission electron microscopy) images of the formulated liposomes showing the final size of packaged replicons/samRNAs. (A) Cationic liposomes alone; (B) cationic liposomes complexed with 1 μg of GFP replicon; and (C) cationic liposomes complexed with 1 μg of nLuc replicon. Data scales of 100 nm, 200 nm and 50 nm, respectively.
