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. Author manuscript; available in PMC: 2012 Aug 19.
Published in final edited form as: Biochem Biophys Res Commun. 2011 Jul 22;412(1):55–60. doi: 10.1016/j.bbrc.2011.07.036

Fig. 4.

Fig. 4

Detection of intracellular hydrogen peroxide level using HyPer sensor. (A) Dose dependent response of HyPer-cyto sensor to known amount of H2O2 in HeLa1.2 cells revealed by flow cytometry. (B) Changes of HyPer-cyto fluorescence in STS-treated HeLa and HeLa1.2 cells examined by flow cytometry. (C) Representative time-lapse fluorescence images of HyPer-cyto and HyPer-dmito sensors in H2O2− (a–d, 200 µM, recorded every 30 s for 10 min) or STS- (e–h, 100 nM, recorded every 15 min for 3 h) treated HeLa1.2 cells. Data presented are mean±SD (n=3). * p < 0.05 vs untreated control cells, # p < 0.05 vs cells treated with STS alone.