Fig. 7From: Hierarchical drug release designed Au @PDA-PEG-MTX NPs for targeted delivery to breast cancer with combined photothermal-chemotherapyROS generation in MDA-MB-231 cells with blank, Au @PDA-PEG-MTX and NIR + Au @PDA-PEG-MTX. ROS generation was detected by DCFH-DA probeBack to article page