It was evident that the PCN-AQ@Z-FA group with 640-nm light irradiation had the smallest tumor volume and lightest tumor weight, which corresponded well with the tumor growth profiles presented in Fig. 8B. Additionally, the tumors were subjected to histological examination through hematoxylin and eosin (H&E) and TdT (terminal deoxynucleotidyl transferase)-mediated dUTP nick end labeling (TUNEL) staining assay. Here, DNTT is linked to neoplasm.