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| Males | Females | Plugs | Pregnancies | Average litter size | |
| Male fertility test | WT(n = 6) | WT(n = 48) | 38 | 36 | 7.5 |
| KO(n = 6) | WT(n = 48) | 33 | 0 | 0 | |
| Female fertility test | WT(n = 5) | WT(n = 10) | 8 | 7 | 5.6 |
| WT(n = 5) | KO(n = 10) | 9 | 7 | 5.5 |
