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Cellular uptake of RH123 labeled liposomes in MCF-7/MDR (A) and MCF-7 cells (B). Results are expressed as mean fluorescence values determined by flow cytometry after 1, 2, 4, 8, 12 and 24 h of incubation. (C) Real-time confocal microscopy images of MCF-7/MDR after incubation with HA-TPD-CL-RH123 liposome. Scale bar: 10 μm.
