TABLE 2.
Litter sizes
| Genotypea | No. of breeding pairs | Total no. of litters born | No. of pups born/litter (mean ± SD) |
|---|---|---|---|
| Wild type × wild type | 2 | 5 | 6 ± 2 |
| Heterozygous × heterozygous | 7 | 50 | 6 ± 2 |
| Homozygous × homozygous | 3 | 6 | 7 ± 2 |
All breeding pairs were inbred 129/SVJ mice.