Fig. 5. The two-photon fluorescence imaging of MGO with NI-OPD in living cells stimulated with tunicamycin (Tm) which can induce ER stress. (A) Fluorescence images of NI-OPD in MCF-7 cells after treating with Tm (50 μg mL–1). λex = 780 nm, collected at 420–480 nm. (B) The relative fluorescence intensity output of NI-OPD in group (A) at different times. Scale bar: 20 μm.
