Fig. 7. (A) The loading efficiency of VEGF-loaded PLGA MPs. (B) Release profiles of native VEGF and PEGylated VEGF released from PLGA MPs in PBS (pH 7.4). (C) Confocal fluorescence microscope images of one PLGA MPs at (a): 0, (b): 7 and (c): 14 days (scale bar = 10 µm) and fluorescence intensity profiles of PLGA MPs and released CQDs from PLGA MPs.
