Figure 13

Figure 13

Representative histological sections illustrating structural organization in various brain regions of zebrafish from the control group and those exposed to different concentrations of deltamethrin (DM) and imidacloprid (IMI) in combination. Panels (1A–5A) correspond to the control group, while (1B–5B,1C–5C,1D–5D) show sections from zebrafish exposed to 0.125 µg L⁻¹ DM + 6 µg L⁻¹ IMI, 0.25 µg L⁻¹ DM + 50 µg L⁻¹ IMI, and 0.5 µg L⁻¹ DM + 500 µg L⁻¹ IMI, respectively. The images display the following brain regions: Olfactory bulbs (1A–1D), scale bar = 30 µm; Telencephalon (2A–2D), scale bar = 60 µm; Diencephalon and mesencephalon (3A–3D), scale bar = 100 µm; Rhombencephalon (4A–4D), scale bar = 100 µm; Medulla oblongata (5A–5D), scale bar = 60 µm.