Table 3.

Comparison of H3K9 dimethylation patterns in vitro fertilization (IVF), homotype SCNT, and heterotype SCNT bovine blastocysts.

Embryo types (Oocytes-Donor)	No.	H3K9 methylation status
		Normal H3K9 methylation patterns: hypomethylated trophectoderm and hypermethylated ICM (%)	Aberrant H3K9 methylation patterns: little difference between ICM and trophectoderm (%)
IVF blastocyst	35	26 (74.3)	9 (25.7)a
A-A	11	7 (63.6%)	4 (36.4%)b
B-B	17	6 (35.3%)	11 (64.7%)c
A-B	12	1 (8.3%)	11 (91.7%)d
B-A	13	1 (7.7%)	12 (92.3%)d
Homotype SCNT	28	13 (46.4)	15 (53.6)e
Heterotype SCNT	25	2 (8.0)	23 (92.0)d

a, b, c, d, e values in same columns with different superscripts differ significantly (P < 0.05) based on Fisher's exact test.