Alterations in the Gill Filaments and Secondary Lamellae of Cirrhinus mrigala Exposed to “Nuvan,” an Organophosphorus Insecticide

Figure 5

(a) Density of mucous goblet cells (number/mm²; mean ± SD) in the epithelium of the gill filaments of C. mrigala at different intervals. 0 h: prior to exposure to “Nuvan”; 4 h–4 d: intervals of exposure to 5 mg/L and 15 mg/L of “Nuvan”; 2 dr–16 dr: intervals of recovery after 4 d exposure to “Nuvan.” h: hour; d: day; dr: day of recovery; mg/L: milligram/liter; and asterisks “” on points indicate significant difference from control (). . (b) Density of mucous goblet cells (number/mm²; mean ± SD) in the epithelium of the secondary lamellae of C. mrigala at different intervals. 0 h: prior to exposure to “Nuvan”; 4 h–4 d: intervals of exposure to 5 mg/L and 15 mg/L of “Nuvan”; 2 dr–16 dr: intervals of recovery after 4 d exposure to “Nuvan.” h: hour; d: day; dr: day of recovery; mg/L: milligram/liter; and asterisks “” on points indicate significant difference from control (). . (c) Area of mucous goblet cells (μm²; mean ± SD) in the epithelium of the gill filaments of C. mrigala at different intervals. 0 h: prior to exposure to “Nuvan”; 4 h–4 d: intervals of exposure to 5 mg/L and 15 mg/L of “Nuvan”; 2 dr–16 dr: intervals of recovery after 4 d exposure to “Nuvan.” h: hour; d: day; dr: day of recovery; mg/L: milligram/liter; and asterisks “” on points indicate significant difference from control (). . (d) Area of mucous goblet cells (μm²; mean ± SD) in the epithelium of the secondary lamellae of C. mrigala at different intervals. 0 h: prior to exposure to “Nuvan”; 4 h–4 d: intervals of exposure to 5 mg/L and 15 mg/L of “Nuvan”; 2 dr–16 dr: intervals of recovery after 4 d exposure to “Nuvan.” h: hour; d: day; dr: day of recovery; mg/L: milligram/liter; and asterisks “” on points indicate significant difference from control (). .

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