Figure 1.

Effect of different concentrations of gallic acid (GA) on the viability of rat’s embryonic fibroblast (REF) (A) and pancreatic islet cells (B). The MTT assay was performed after 24 h of exposure to determine the EC₅₀ of GA. The EC₅₀ of GA on REF and pancreatic islet cells was calculated as 554.25 and 400 μM, respectively. Data are presented as the mean ± standard error of measurements performed on six groups, with three independent replicates; ^a p < 0.05; ^aaa p < 0.001.