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. 2016 Apr 27;17(5):629. doi: 10.3390/ijms17050629

Figure 1.

Figure 1

(a) Chemical structures of reduced glutathione (GSH) and GSH monoethyl ester (GSH-MEE); (b) Effect of GSH derivatives on cellular viability. GSH and GSH-MEE had no effect on cellular viability, but GSH-MIPE and GSH-DEE showed toxicity in Melan-A cells. Data are shown as the mean ± SD of three replicates, and * p < 0.05, ** p < 0.01, and *** p < 0.001 compared to untreated controls. GSH, reduced glutathione; GSH-MEE, GSH monoethyl ester; GSH-MIPE, GSH monoisopropyl ester; GSH-DEE, GSH diethyl ester; SD, standard deviation.