Figure 5.

Relative antioxidant enzyme activities in Argopecten irradians irradians and Tridacna derasa. Catalase activity was assessed in homogenates of gill tissues (A) and adductor muscles (B) and superoxide dismutase activity was assessed in homogenates of gill tissues (C) A i irradians and 
T derasa maintained under control conditions (baseline) or exposed to tert-butyl hydroperoxide (TBHP; 10⁻⁴ mol/L, for 24h). Data are mean ± SEM (n = 4–8 in each group). * indicates a significance (p < .05) difference between control and TBHP-exposed clams.).