Fig. 7

Confocal laser scanning microscopy images of the fluorescent labeled inhibitor of caspases (FLICA) apoptosis assay after irradiation of CAL-33 spheroids with 3440 lx for 1 min. FLICA: green, Hoechst 33342 nuclear stain: blue, mTHPC (red). Untreated control (a) and incubations with mTHPC (b), 50 nm M-Lipidots (c) or 120 nm M-Lipidots (d). Concentration for all treatments: 3.67 µM mTHPC. Incubation time 24 h. Scale bar 50 µm