Fig. 9.

a Viability assessment of 4T1 cells exposed to different concentrations of NPs (CuS content) for 24 h. b, c Viability assessment of 4T1 cells treated with different concentrations of NPs for 6 h, followed by 5-min irradiation by an 808 nm (b) or 980 nm (c) laser at 0.75 W cm⁻² and another 18 h of incubation. d Tumor growth curves of 4T1 tumor-bearing mice after IV injection with PBS, Dox, p-Au₉₈₀-CuS, p-Au₉₈₀-CuS@Dox in the presence (980 nm laser, 0.9 W cm⁻², 5 min) and absence of irradiation. e Representative photos of tumor-bearing mice after treatment. Reproduced with permission from Ref. [77]. Copyright 2018, American Chemical Society, Washington, DC