Fig. 1
From: Targeting and sensitizing MDR cancer by an MMP2 and pH dual-responsive ZnO-based nanomedicine
Particle sizes of (A) ZnO/DOX and (B) ZnO/DPPG/PEG-pp-PE/DOX determined by the DLS. TEM images of (C) ZnO/DOX and (D) ZnO/DPPG/PEG-pp-PE/DOX, the scale bar is 100Â nm. E Digital photographs of ZnO (a), DPPG (b), and ZnO/DPPG (c), dispersed in chloroform. (F) Digital photographs of DOX (i), ZnO/DOX (ii), ZnO/DPPG/DOX@PEG-PE (iii), and ZnO/DPPG/PEG-pp-PE/DOX (iv), dispersed in HBSS. G DOX release from ZnO/DOX at pH 7.4 or 5.0. H DOX release from ZnO/DPPG/PEG-pp-PE/DOX at pH 7.4 or 5.0, or in the presence of MMP2 or HSA