Table 1 Comparison of the outcomes between 4- to 8-cell embryo injection and blastocyst injection

Chimera type

Total no. of chimera embryos transplanted into recipient mice

Total no. of recipient mice

Total no. of pregnant mice

Total no. of normal fetuses recovered

Total no. of other recovered (implantation site without a definable embryo, necrotic or reabsorbing implantation)

Total no. of pregnant mice/total no. of recipient mice (%)

Total no. of normal fetus recovered/total no. of chimera embryos transferred (%)

(Total no. of normal fetuses + total no. of other recovered)/total no. of chimera embryos transplanted (%)

Total no. of normal fetus recovered/(total no. of normal recovered + total no. of others recovered) (%)