Fig. 6.

a Light microscopic measurements of spheroid areas of CAL-33 spheroids incubated with 3.67 µM (1), 7.34 µM (2) and 14.69 µM (3) mTHPC or 50/120 nm M-Lipidots with (+) and without (−) light irradiation with 3440 lx for 20 min. b Cell viability ATP assays of CAL-33 spheroids incubated at the same conditions as in a. *p < 0.05. ***p < 0.001