Fig. 5

a Change of tumor volumes and b representative tumor images of mice treated with saline (1), AuNPs-DNS (2), AuNPs-DNS/Que (3) or free quercetin (4) in the absence or presence of 800-nm light irradiation. Error bars indicate means ± SD (n = 5). c Histological observations of the major organs from mice treated with saline or AuNPs-DNS/Que after NIR irradiation. The scale bar indicates 100 μm