Background

Mean number of plugs ± SEM

Mean number of 2-cells embryos ± SEM

C57BL/6J

5.070 ± 0.2350

9.3 ± 0.7463

B6*129

5.3870 ± 0.3953

9.078 ± 1.731

FVB/NJ

4.778 ± 0.8625

6.377 ± 1.666