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Fluorescence micrographs of CF-entrapped liposomes labeled with rhodamine in (a–c, g) RAW264.7 cells and (d–f) HeLa cells. PEGylated liposomes incubated at (a, d) 37 °C and (g) 40 °C and P(NIPAAm-co-DMAPAAm)-modified liposomes incubated at (b, e) 30 °C and (c, f) 40 °C for 30 min. CF is shown in green, and rhodamine is shown in red. The scale bar is 10 μm.
