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Horizontal and longitudinal MRI results of breast tumor bearing mice after tail vein injection of Fe3O4@hmC or Fe3O4@SiO2@C for different hours (A). Quantitative analysis of MRI signals after tail vein injection of Fe3O4@hmC or Fe3O4@SiO2@C for different hours (B). Photothermal images (C) and temperature curve (D) of breast tumor bearing mice after 12 h post-injection of Fe3O4@hmC-DOX or PBS under 808 nm laser irradiation for various durations.
