Fig. 5

In vivo performances of the Cu₂MnS₂ hydrogel in tumor bearing mouse model. a The retention of the DiR labeled hydrogel and free DiR solution after peritumoral administration (Ex/Em: 740/820 nm); b and c the thermographs and the corresponding heating curves of the tumor sites after peritumoral administration of the blank hydrogel or Cu₂MnS₂ hydrogel plus 808 nm irradiation (1 W/cm²); d pictures of the tumor tissues after photothermal therapy (1 W/cm², 5 min) in eight sequential days, the red circle represents visibly undetectable tumor sample; e statistic graph of the tumor weights, * represents statistical significance (p < 0.05); f hematoxylin & eosin staining of the tumor tissues