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(a) Schematic illustration of the synthesis of IONP@PPy-PEG nanoparticles for 4T1 cancer treatment; (b) T2-weighted MR images of 4T1-bearing mice after intravenous injection of IONP@PPy-PEG (white circle: tumor sites); (c) photoacoustic images of tumor-bearing mice with IONP@PPy-PEG; (d) thermal images of mice with IONP@PPy-PEG after 808 nm laser irradiation; (e) growth curve of 4T1 tumors after treatment. Figures are reproduced from ref. [74] with permission from Wiley.
