Table 4. Compared the embryo development rate from growth factors supplement in mouse embryos treated with LIF SiRNA.

Stage	Untreated (n = 62)	Scramblea (n = 60)	LIF-siRNA (1.5 fmol)
			Vehicle (n = 75)	EGF (50 ng/ml) (n = 66)	GM-CSF (50 ng/ml) (n = 72)	IGF II (50 ng/ml) (n = 75)	TGFβ (50 ng/ml) (n = 68)	LIF (50 ng/ml) (n = 77)
Two-cell	93.5	93.5	93.0	92.4	83.3	85.7	83.9	93.0
Four-cell	90.3	90.3	83.1	86.4	73.6	75.7	74.2	77.5
Morula	87.1	87.1	69.0	84.8	62.5	54.3	66.1	73.2
Blastocyst	82.3 b	81.7 b	43.6a	75.8b	58.3a	42.9a	48.4a	67.6 b

^aP<0.05 compared to scramble group

^bP<0.05 compared to only LIF-siRNA treated group