Table 1. In vitro development rates of intraspecies and interspecies cloned embryos

Donor cell¹⁾	No. of oocytes	Fusion (%)	Cleavage (%)	Morula (%)	Blastocyst (%)	No. of total cells
Porcine FF	99	82.9 ± 2.3^a	62.7 ± 1.6^a	12.2 ± 1.8^a	11.1 ± 0.9^a	25.0 ± 3.5^a
Mouse FF	100	59.6 ± 0.7^b	47.0 ± 0.9^b	10.0 ± 0.7^a	10.1 ± 1.2^a	24.0 ± 6.3^a

Porcine or mouse fetal fibroblast cells were used for donor cells.
Within a column, results with different superscripts are significantly different (p < 0.05). The experiment was repeated four times.
FF, fetal fibroblasts.