Fig. 6. Confocal microscopy images for endogenous H2S and hNQO1 detection in living cells using 2. (A) Cells (∼2 × 104 cells per well) were incubated with only 2 (10 μM) for 1 h, washed, then imaged. Scale bar, 10 μm. (B) Relative fluorescence intensity of images from (A). (C) Relative fluorescence intensity of images from inhibitor-pretreated HT29 cells. N = 3 fields of cells, error bars are means ± sd. *P < 0.05; **P < 0.01. For (B), the black * was relative to HT29 group, and the red * was relative to HepG2 group.
