Table 4-3. Glutathione peroxidase (GPX) specific activity in Chelonia mydas muscle homogenate. Treatment Week n GPX Activity, Muscle Group (nmol/min*mg protein) AL 5 10 2.78 + 0.16 R 5 10 3.07 0.37 AL 12 7 2.68 + 0.12 R 12 10 2.66 0.11 R-AL 12 10 2.78 0.18 Values represent means standard errors. Treatment groups and data analysis are the same as in Table 4-1. No significant differences in GPX activity of muscle tissue were detected among treatment groups in either sampling period.