Fig. 6

a Schematic illustration of the in vivo therapeutic process. b Digital photographs of tumors collected from different groups after 20 days of treatment. Left to right: PBS, PBS with NIR irradiation, PB NPs, PB NPs with NIR irradiation, PB@DN@M NPs, PB@DN@M NPs with NIR irradiation. Scale bar: 1 cm. c Infrared thermal images and d corresponding temperature changes of liver tumor-bearing mice under NIR irradiation for 5 min. e Tumor volumes and f body weight of tumor-bearing mice after different treatments. g Tumor weights of different groups at the end of treatment. h Biodistribution of PB NPs and PB@DN@M NPs over a span of 12 h after injection