|  | No. (%) of embryos developed to | ||||
---|---|---|---|---|---|---|
Group | No. of embryos cultured | Day 3 | Day 7 | |||
 |  | 2-cell | 4-cell | 8- to 16-cell | Cleavage | Blastocyst |
IVF | 117 | 21 (17.9 ± 2.8) | 37 (31.5 ± 2.7) | 43 (36.9 ± 3.4) | 101/117 (86.3 ± 1.3) | 38 (33.5 ± 2.8)a |
BB-SCNT | 99 | 13 (14.1 ± 2.8) | 13 (13.7 ± 2.1) | 58 (57.4 ± 3.4) | 83/99 (85.3 ± 2.5) | 29 (28.2 ± 2.7)a |
MB-iSCNT | 110 | 12 (16.1 ± 4.1) | 20 (22.3 ± 3.7) | 67 (51.0 ± 5.1) | 99/110 (89.3 ± 2.7) | 0 (0)b |