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Effect(s) of metformin on the viability of AGS cells. The cells were exposed to 0, 10, 20, 30, 40 and 50 mM of metformin for 12, 24 and 48 h. The viability of AGS cells was detected by the MTT assay. The values are presented as the mean ± standard deviation of triplicates within three representative experiments. *P<0.05 vs. untreated control.
