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The in vitro H22 cellular uptake studies of nanoparticles. (A) Confocal microscopy images of H22 cells after incubation with coumarin-6-loaded Rhodamine-B labeled PEG-PCL and Rhodamine-B labeled PEG-Pep-PCL nanoparticles. (B) The uptake efficiencies of coumarin-6-loaded PEG-PCL and PEG-Pep-PCL nanoparticles at different time points.
Notes: **P < 0.01; ****P < 0.0001.
Abbreviations: PCL, poly(ɛ-caprolactone); PEG, poly(ethylene glycol); Pep, peptide.
