Sample | Number of cells analyzed | Micronuclei (number) | Micronuclei, % (mean ± SD) |
NC | 8500 | 12 | 0.14 ± 0.04 |
HWEA | 8384 | 31 | 0.37 ± 0.06** |
CWEA | 7483 | 15 | 0.20 ± 0.05 |
PC | 6739 | 33 | 0.49 ± 0.07*** |