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Size exclusion chromatography of different samples. (A) chromatography of neutral liposomes and pure DSPE-PEG2000 ; (B) chromatography of DOTAP in different formulations; (C) chromatography of DSPE-PEG2000 in different formulations; (D) chromatography of different components in the PEGylated LPD. Data are representative chromatography from 2–3 batches of formulations.
