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Colocalization of polycation lipid nanocarrier/DNA complexes (PDC) (N/P = 10) with late endosomes/lysosomes in human lung adenocarcinoma (SPC-A1) cells under laser scanning confocal microscopy at 2 hours after transfection. (A) TM-Rhodamine labeled plasmid DNA (red); (B) LysoTracker Green DND26 labeled late endosomes/lysosomes (green); (C) phase-contrast image of S PC-A1 cells; (D) merged image, scale bar = 25 μm.
