Table 1. Micronuclei (MNi) formation in the HAC/BRCA1-containing UWB1.289 cells and in the same cells that have lost the HAC.
| Experiment | No Mni | Mni | Total | %Mni | Mean ± SD (%)** |
|---|---|---|---|---|---|
| BRCA1 positive (A)* | 155 | 53 | 208 | 25.5 | 24.7±1.1 |
| BRCA1 positive (B) | 156 | 49 | 205 | 23.9 | |
| BRCA1 negative (A) | 129 | 81 | 210 | 38.6 | 38.5±0.1 |
| BRCA1 negative (B) | 125 | 78 | 203 | 38.4 |
A, the first experiment; B, the second experiment.
**Number of MN is given as means ± SD in two independent experiments. There is a significant difference between BRCA1 positive and BRCA1 negative cells [χ2 (1) = 18.20, P < 0.0001].