| Groups | Acetylcholinesterase (µmoles/min/mg protein) | GAD (U/mg protein) | Arginase (U/mg protein) |
| I | 0.42 ± 0.01 | 11.21 ± 0.48 | 0.86 ± 0.07 |
| II | 0.40 ± 0.03 | 11.90 ± 0.74 | 0.86 ± 0.11 |
| III | 0.72 ± 0.07* | 10.14 ± 0.17 | 1.12 ± 0.10* |
| IV | 0.37 ± 0.03a | 11.17 ± 1.16 | 0.87 ± 0.15a |
| V | 0.36 ± 0.01a | 11.62 ± 1.04 | 0.85 ± 0.09a |
| VI | 0.35 ± 0.02a | 10.38 ± 0.10 | 0.91 ± 0.22 |
| VII | 0.33 ± 0.04a | 10.52 ± 0.94 | 0.76 ± 0.04a |