Fig. 6: Photocytotoxicity of compound 1 to MCF-7 cells 3D MCTS.

The CLSM images of MCTS incubated with compound 1 (10 μM) for 4 h (0 d) and then exposed to white-light irradiation (40 mW/cm2) for 20 min each day (1 d, 2 d, 3 d). The experiment was repeated three times independently, with similar results. Scale bar: 400 μm.