Fig. 4.
From: Sulourea-coordinated Pd nanocubes for NIR-responsive photothermal/H2S therapy of cancer
a PAI images of 4T1 tumor treated with the Pd-Su nanomedicine. b Relative photoacoustic (PA) intensity change with time after intravenous injection with the Pd-Su solution to evaluate the intratumoral accumulation and retention of Pd-Su (n = 3). The data were presented as mean ± SD. c Photothermal curves of tumors treated with PBS, Pd, or Pd-Su and then exposed to 808-nm laser irradiation (n = 3). d Photothermal images of corresponding 4T1 tumor-bearing mice at different NIR-irradiation time points.