| Treat. (−Mpa) | Zinc | Ni |
| 0.0 | 0.74 | 2.87 |
| 1.2 | 1.35 | 2.61 |
| Zn (µM) 0.0 + 20 | 1.26 | 1.97 |
| 1.2 + 20 | 1.28 | 2.15 |
| 0.0 + 200 | 1.31 | 1.97 |
| 1.2 + 200 | 1.23 | 2.19 |
| Ni (µM) 0.0 + 1 | 1.57 | 2.16 |
| 1.2 + 1 | 1.39 | 2.30 |
| 0.0 + 100 | 1.04 | 2.37 |
| 1.2 + 100 | 1.78 | 2.48 |