Antagonistic Effects of Sublethal Concentrations of Certain Mixtures of Metal Oxide Nanoparticles and the Bulk (Al₂O₃, CuO, and SiO₂) on Gill Histology in Clarias gariepinus

Figure 8

(a) Histological section of gill exposed to nano-SiO/CuO (2 : 1) showing fused secondary gill lamella (FSGL), secondary gill lamella (SGL), and epithelial hyperplasia (HPS) (H&E stains, ×400). (b) Histological section of gill exposed to bulk SiO/CuO (2 : 1) showing hypertrophy (HPT), blood vessel (BV), and epithelial hyperplasia (HPS) (H&E stains, ×400).

(a)

(b)