| Group | Number of MN per 1000 PChE |
| Intact controls | 3.75 ± 0.83** |
| BPC controls (“Picovit”, Saparalum, pectin) | 4.86 ± 0.81 |
| Combination of metals | 6.55 ± 0.72 |
| Combination of metals + BPC | 4.71 ± 0.69* |