Assay | Time (days) | Specific activity (U/mg) (mean ± SD) |
1 | 5 | 0.011 ± 0.008a |
2 | 10 | 0.193 ± 0.054b |
3 | 15 | 0.236 ± 0.039c |
4 | 20 | 0.195 ± 0.020b |
5 | 25 | 0.037 ± 0.001a |
6 | 30 | 0.027 ± 0.008a |