Results 271 to 280 of about 452,413 (312)
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Annals of the New York Academy of Sciences, 1985
Success and failure of embryo transfer involves at least five major variables: (1) technique, (2) what is transferred, (3) when transfer occurs, (4) endometrial status at transfer, and (5) endometrial support subsequent to transfer. Because of these and other variables associated with programs of in vitro fertilization, it is quite impossible to ...
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Success and failure of embryo transfer involves at least five major variables: (1) technique, (2) what is transferred, (3) when transfer occurs, (4) endometrial status at transfer, and (5) endometrial support subsequent to transfer. Because of these and other variables associated with programs of in vitro fertilization, it is quite impossible to ...
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Residual embryos in failed embryo transfer
Fertility and Sterility, 1986One hundred thirteen embryo transfers (ETs) were performed in an in vitro fertilization and ET program of which residual or extruded embryos were found in 17 transfers (15%). Residual or extruded embryos are those embryos found outside the uterine cavity, either at the cervical os, on the vaginal speculum, or remaining in the catheter after an ET ...
A N, Poindexter +5 more
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Human embryo is a human embryo, not a pre‐embryo
International Journal of Gynecology & Obstetrics, 2000Objectives: The aim of the study was to investigate the scientific evidence underlying the progressive introduction of the new term “preembryo” in the literature concerning in vitro fertilization and applied preimplantation genetics. Study Methods: Four approaches to the study of the developing human embryo were considered: genomics, DNA expression ...
Avanzini, S +7 more
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Seminars in Reproductive Medicine, 1998
Cryopreservation stands as an ongoing evolution in the field of assisted reproductive technologies. Face with increasing numbers of fertilized oocytes and early embryos, cryopreservation avails the ART program of a useful means to preserve embryos for future use without exposing patients to the risks of multiple pregnancies.
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Cryopreservation stands as an ongoing evolution in the field of assisted reproductive technologies. Face with increasing numbers of fertilized oocytes and early embryos, cryopreservation avails the ART program of a useful means to preserve embryos for future use without exposing patients to the risks of multiple pregnancies.
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Whole embryo culture of presomitic mouse embryos
Toxicology in Vitro, 1995Rat embryos explanted at the presomite stage and cultured through limb bud stages develop to well formed embryos and exhibit growth and differentiation which mimic those observed in vivo at corresponding stages. In contrast, the culture of presomite stage mouse embryos has proven to be much less successful.
G, Van Maele-Fabry +2 more
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Embryo production in superovulated cows: Transferable embryos correlated with total embryos
Theriogenology, 1984Embryo production was studied in 1,263 donor cows. The number of transferable (good) embryos per collection was highly correlated with the total embryos and ova in a collection (r = 0.64). Total ova and embryos per collection averaged 10.1 with a range from 0-70; the number of good embryos averaged 4.5 with a range from 0-37.
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Single-embryo transfer versus multiple-embryo transfer
Reproductive BioMedicine Online, 2009Despite the progress made in assisted reproductive technology, live birth rates remain disappointingly low. Multiple-embryo transfer has been an accepted practice with which to increase the success rate. This has led to a higher incidence of multiple-order births compared with natural conception, which not only increase the risk of mortality and ...
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Single-cell transcriptomic characterization of a gastrulating human embryo
Nature, 2021Richard C V Tyser +2 more
exaly
Distinguishing Embryos from Non-embryos
2011This chapter considers several techniques recently developed to obtain human pluripotent stem cells, without, apparently, disaggregating human embryos: reprogramming somatic cells (to obtain induced pluripotent stem cells, or iPS cells), altered nuclear transfer combined with oocyte-assisted reprogramming, and parthenogenesis (naturally occurring or ...
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