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Cellular uptake of Rh-123 loaded PCL nanoparticles. Confocal microscopic images of L6 myoblast cells with Rh-123 (red) loaded PCL nanoparticles at specified time intervals: (A) 30 min, (B) 1 h, and (C) 2 h (40× magnification). DAPI (blue) was used as a nuclear stain. The merged images of Rhodamine 123 and DAPI were also shown.
