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The in vitro targeting efficiency from confocal microscopy ((A) bar = 10 μm) and flow cytometry (B) analysis after incubating U87 cells with 5(6)-carboxyfluorescein (5(6)-FAM)-labeled PLGA magnetic nanoparticles (PMNP) and (5(6)-FAM)-labeled HA-coated PLGA magnetic nanoparticles (HA/PMNP) for 24 h. The cytoskeleton was labeled with phalloidin-TRITC (red) and the nucleus was counterstained with DAPI (blue).
