Figure 2: Effects of TCME on the production of reactive oxygen species in Escherichia coli, Salmonella typhimurium, and Shigella flexneri. The data are presented as mean±SD (n=3) and analyzed using SPSS. The unpaired samples t-test, and one-way analysis of variance were used to compare the outcomes between tested groups. *P<0.001 compared with control. a.u: arbitrary units.