Effects of partial or complete laser-assisted hatching on the hatching of mouse blastocysts and their cell numbers

Table 3 Number of cells in the inner cell mass (ICM), trophectoderm (TE), total cells, and ICM:TE ratio of hatched blastocysts in the control and laser groups in experiment 2

	Control	1-hole	2-hole	P
	(n=44)	(n=66)	(n=63)	P
ICM	23.5±2.7	20.7±3.1	19.6±3.5	0.000^a
TE	64.8±6.8	55.7±9.4	53.7±10.6	0.000^b
ICM:TE	0.4±0.04	0.4±0.05	0.4±0.06	0.661
Total	88.2±8.1	76.3±11.6	73.1±12.9	0.000^c

Values are means ± standard deviation (SD).
One-way ANOVA with Scheffe post-hoc test when P<0.0125 (P<0.05/4).
^a control vs. 1-hole group (P=0.000), and control vs. 2-hole group (P=0.000).
^b control vs. 1-hole group (P=0.000), and control vs. 2-hole group (P=0.000).
^c control vs. 1-hole group (P=0.000), and control vs. 2-hole group (P=0.000).

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