Table 1. Development of SCNT embryos derived from donor cells with Dnmt1s knockdown.

Group	No. embryoscultured (Rep.)	No. embryos cleaved(% ± SEM)	No. blastocysts(% ± SEM)	Blastocystcell numbers(mean ± SEM) *
control	163 (5)	138 (84.75 ± 1.98)	33 (20.37 ± 1.15)a	35 ± 2 (n=32)
siRNA- negative	167 (5)	139 (83.23 ± 1.43)	36 (21.50 ± 1.06)a	34 ± 3 (n=34)
siRNA- positive	176 (5)	153 (87.28 ± 1.73)	55 (31.33 ± 1.49)b	38 ± 3 (n=29)

*Blastocyst cell numbers, less than 16, were not included, and 25 blastocysts in the siRNA-positive group were used for molecular analysis.

^a-bValues in the same column with different superscripts differ significantly (P < 0.05).