Table 7.
Percentage of cells expressing an ER-α and 3H-TdR double-label per field of view found in the glands and mammary fat pads of Balb/C female mice that were either intact or implanted with immortalized, premalignant cells
| Percentage (%) | ||
|---|---|---|
| Intact (control) gland:Implant group | Nulliparous | Pregnant |
| Intact:NSP2 | 0.20:0.10 | 0.13:0.01 |
| Intact:NSP3 | 0.04:0.05 | 0.08:0.03 |
| Intact:SP3 | 0:0.09 | 0.06:0.06 |
The number of cells expressing an ER-α and 3H-TdR double-label was counted in three random fields of view (400× magnification). In addition, the total number of cells in three random fields of view was determined (>1000 cells total counted; 400× magnification). The total number of cells expressing an ER-α and 3H-TdR double-label were then divided by the total number of cells in a field of view, and the percentage of cells expressing an ER-α and 3H-TdR double-label per field of view was obtained.