Fig. 5

Effects of different sublethal concentrations of CBSF on (a) CAT, (b) SOD, and (c)MDA level in Tubifex tubifex at different exposure periods. Where ns represents the non-significant differences and the * denotes the level of significance, (**p < 0.01, ***p < 0.001, and ****p < 0.0001). Data are shown as mean ± SEM (n = 3), and the Duncan multiple range test was performed.