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SEM images of KGN-loaded particles prepared with (a) PLGA and PLGA combined with (b) PEG at 10% w/w; (c) PEG at 30% w/w; (d) PEG at 50% w/w; (e) PVP at 10% w/w; (f) PVP at 30% w/w; and (g) PVP at 50% w/w. Scale bar: 20 µm for all panels except (d) 30 µm.
