8Zhu S. F,et al.Cryopreservation of expanded mouse blastocysts by vitrification in ethylene glycol-based solutions. Journal of Reproduction and Fertility . 1993
9Zhu S. E,et al.Cryopreservation of zona-hatched mouse blastocysts. Journal of Reproduction and Fertility . 1996
10Zhu S. E,et al.Optimization of the procedures for the vitrification of expanded mouse blastocysts in glycerol-based solufions. Journal of Reproduction and Development . 1994
