Fig. 8. Changes of mitochondrial membrane potential after PDT.

CLSM images when HeLa cells performed with different conditions: (a–c) with light irradiation; (d–f) without light irradiation (control group); (g–i) in the presence of TPE-PyT-CPS (0.2 μM) without light irradiation; (j–l) in the presence of TPE-PyT-CPS (0.2 μM) with light irradiation (25 mW cm⁻², 2 min). JC-1 was used as a mitochondrial membrane potential indicator. The experiments were performed three times independently, representative images are shown. Scale bar: 25 μm.