Table 1.
Number (%) of neoplasm-bearing mice/number of mice examined
| Age at death | F AL | F DR | M AL | M DR |
|---|---|---|---|---|
| 12 ± 1 months |
2/22 (9.1) |
2/19 (10.5) |
0/19 (0.0) |
0/24 (0.0) |
| 17 ± 1 months |
8/41 (19.5) |
0/15 (0.0) |
4/45 (8.9) |
0/34 (0.0) |
| 20 ± 1 months |
13/21 (61.9) |
0/16 (0.0) |
9/20 (45.0) |
1/5 (20.0) |
| 23 ± 1 months |
24/47 (51.1) |
7/35 (20.0) |
12/31 (38.7) |
5/11 (45.5) |
| 26 ± 1 months |
18/34 (52.9) |
0/6 (0.0) |
15/61 (24.6) |
13/48 (27.1) |
| 29 ± 1 months |
16/30 (53.3) |
3/31 (9.7) |
2/24 (8.3) |
4/25 (16.0) |
| 32 ± 1 months |
22/37 (59.5) |
15/41 (36.6) |
11/36 (30.6) |
8/58 (13.8) |
| 35 ± 1 months |
1/8 (12.5) |
5/36 (13.9) |
|
7/34 (20.6) |
| 37 months | 2/20 (10.0) |