Table 2. Development of the aggregated embryos into chimeric fetuses.
Chimeric fetuses (%) | ||||||||
Stage of host embryos | Aggregated embryos produced | Developed to blastocysts (%) | Blastocysts transferred | Pregnancy | Developed to fetuses (%) | huKO-positive chimera | Male-femal chimera | Total |
Morula | 102 | 73 (71.6) | 73 | 2/2 | 25 (34.2) | 6 (24.0) | 3 (12.0) | 9 (36.0) |
4–8 cell | 67 | 54 (80.6) | 54 | 2/2 | 22 (40.7) | 3 (13.6) | 0 (0) | 3 (13.6) |