volume 48, issue 2, P306-314 1987
DOI: 10.1016/s0015-0282(16)59361-3
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Abstract: Cryopreservation of unfertilized mouse ova and 2-cell embryos by a vitrification technique was examined. Survival was defined by development to the hatching blastocyst stage after in vitro fertilization. With 19 embryos at the 2-cell stage, the authors obtained 100% morphologic survival and 89% development to hatching blastocyst stage. To define the optimal conditions for vitrification of ova, the authors treated a total of 845 unfertilized ova. In experiments done at 0 degree C, the concentration of vitrifica…

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