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In vivo biodistribution and photothermal performance of Bi2Se3/DOX@MPs. In vivo biodistribution monitored by Bi element after injecting a) Bi2Se3 nanodots and b) Bi2Se3/DOX@MPs intravenously at 6, 12, 24, and 48 h. c) Infrared thermal images H22 tumor‐bearing BALB/c mice injected with PBS, Bi2Se3 nanodots, Bi2Se3/DOX@MPs for 12 h with NIR irradiation. d) Corresponding temperature increase in tumor site measured from c.
