The Cortisol Levels, Histology, and Fine Structure of Various Tissues of Fish Gambusia affinis (Baird and Girard, 1853) after Exposure to Lead

Figure 6

Observation of fish gill structure with SEM observation. (a) Swelling gill structure of fish exposed to PbCl₂ and (b) normal gill structure of control fish without exposure of PbCl_2. Bar size = 10 µm, LS = secondary lamellae, and LP = primary lamellae.

(a)

(b)