Fig. 6

In vivo photothermal and therapeutic effect of AuNDs on HCT 116 tumor-bearing mice. a Thermographic images of HCT 116-tumor-bearing mice treated with saline and AuNDs under NIR-II irradiation (1064 nm, 1.0 W cm⁻²). b Corresponding photothermal heating curves at the tumor site. c Photographs of HCT 116 tumor-bearing mice treated with PBS, PBS + laser, AuNDs, and AuNDs + laser in 14 days. d Photograph of excised solid tumor on the 14th day. e Tumor volume curves after different treatments [Mean ± SD; n = 5 (students’ t-test, ***P < 0.001)]. f H&E and TUNEL stained images of tumor slices on day 14 in different treatment groups (scale bar: 100 μm). g Relative body weight changes after different treatments