Table 2.

Percentage of live cells (mean ± SEM) in blastocysts undergoing vitrification/warming and 24 h culture

Group	Treatment	Day 5	Day 6	All
1	Vit Kit–direct plunge	89.9 ± 2.6	92.8	90.1 ± 2.5
		(n = 19)	(n = 1)	(n = 20)
2	Fast Freeze–direct plunge	94.0 ± 2.7	92.1 ± 3.4	92.7 ± 2.5
		(n = 9)	(n = 21)	(n = 30)
3	Fast Freeze– −100 °C holding step	88.9 ± 3.0	93.2 ± 3.2	90.4 ± 2.2
		(n = 19)	(n = 10)	(n = 29)
4	Control–not vitrified	94.4 ± 4.2	96.2 ± 1.0	95.8 ± 1.1
		(n = 6)	(n = 24)	(n = 30)