Purpose: To report successful pregnancies after the transfer of re-vitrified human day 7 blastocysts developed from vitrified cleaved embryos.
Methods And Results: A total of five day 7 blastocysts developed from vitrified cleaved embryos were re-vitrified and re-warmed. All of five re-vitrified day 7 blastocysts (100%) survived after warming and were transferred to three patients. Two of the women became clinically pregnant. Of these women, one woman delivered a healthy baby and the other pregnancy is ongoing at 26 weeks of gestation.
Conclusions: This is the first report of successful pregnancies after the transfer of re-vitrified human day 7 blastocysts developed from vitrified cleaved embryos.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2582098 | PMC |
| http://dx.doi.org/10.1007/s10815-008-9259-5 | DOI Listing |
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