Fig. 2. (A) Confocal fluorescence images for monitoring exogenous MGO. HeLa cells were incubated first with NI-OPD (10 μM), then with different concentrations of MGO ((a–c) 0 μM, (d–f) 15 μM, (g–i) 30 μM, (j–l) 50 μM) for 2 h. λex = 405 nm, collected at 420–480 nm. (B) Relative fluorescence intensity output of group (A). Scale bar: 20 μm.
