Fig. 6. Acetylcholinesterase activity in brain of Cirrhinus mrigala under exposure to 8 ppm TLD. Data are analyzed statistically by ANOVA and represented in box plot. n = 9. The ‘a’
indicates significant difference (P b 0.01) between treated groups and respective control group at 1 h post treatment, ‘b’ represent significant difference (P b 0.01) between treated groups
(1 h and 24 h post treatment), ‘c’ represent significant difference (P b 0.05) between treated groups (1 h and 24 h post treatment), ‘NS’ represent not significance between the groups
under acute and chronic treatment and also with control group.