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Characterization of P2-labeled DOX-loaded mPEG-PCL nanoparticles. (A) TEM images. (B–D) fluorescence stability in different media (B, purified water; C, PBS with pH = 7.4; D, rat plasma). (E) In vitro release profiles of DOX from mPEG-PCL nanoparticles in PBS (pH = 7.4). Data are presented as mean ± SD (n = 3).
