نتایج جستجو برای: cell transferred embryos
تعداد نتایج: 1744121 فیلتر نتایج به سال:
A 28-year-old patient presented for preimplantation genetic screening (PGS) for family balancing utilizing previously vitrified blastocysts and day-2 embryos. To synchronize endometrial development with the embryos to be transferred, five embryos vitrified on day 2 were warmed 3 days prior to scheduled transfer. Three of them developed to 8-, 8- and 7-cell stages, respectively, and were biopsie...
Purpose: The values of embryonic stem-like cell and cloning are evident. Production of cloned tissue and animals can be achieved by aggregation and injection of these cells into a tetrapolid morula and blastocyst respectively. Tetraploid embryo is used as a feeder for growth and development of stem-like cell can be produced in vitro by electrofusion of two-cell embryos. The aim of this study wa...
During the breeding season in Korea (September 1997 to April 1998), a goat embryo recovery and transfer program using a Korean native strain (Capra hircus aegagrus) was performed for the production of transgenic goats. Donors were synchronized with norgestomet implants and superovulated by a combined treatment with FSH and hCG. The treatment regime induced a consistent and efficient superovulat...
introduction: the mouse embryos can successfully be vitrified using ethylene glycol as cryoprotectant, however their development differs significantly from the non-vitrified embryos. the ability of their development can be improved when they co-culture with somatic cells. in the present study, the effects of co-culturing with vero cells on the development of vitrified two cell mouse embryos wer...
Abstract Study question The impact of Conventional IVF versus ICSI on embryo morphokinetic is still scarce. Would proper selection fertilization method affect embryonic development in different subgroups? Summary answer In unexplained or tubal factor subgruops, convential was preferable resulting higher rate and better quality expressed by less discarded embryos. What known already requires a s...
Background Effect of seasonal changes in human reproduction has been intensively researched. Some studies acknowledge influences of seasonal variation on natural conception, while others can not confirm them. The aim of this study was to investigate the effect of seasonal changes on different stages of assisted reproductive technology (ART) in Tehran. MaterialsAndMethods This study was carried ...
Purpose: the aim of this study is to analyze the factors contributing to the success of frozen- thawed embryo transfer (ET). Material and method: This retrospective, case-control study was carried out on 700 infertile couples treated with IVF and ICSI and had embryo freezing in Isfahan Fertility and Infertility Center, Iran, from the beginning of July 2000 to the end of June 2003. Results: fa...
BACKGROUND The nature of the association between the number of oocytes retrieved and in vitro fertilization (IVF) outcomes after fresh embryo transfer remains unclear because of conflicting results reported in the studies on this subject. In addition, the influence of the quality of the embryos transferred is usually neglected. The objective of this study is to assess the relationships of the n...
The aim of this study was to examine the impact of zona pellucida damage, which might arise during somatic cell nuclear transfer (SCNT), on the development and survival of transferred embryos. The zonae pellucidae of in vitro matured oocytes were either punctured with 8- to 10-microm square-ended nuclear injection pipettes and piezo pulses or slit with 35- to 40-microm enucleation pipettes. Int...
SUMMARY To study the effect of vero cells on preimplantation mouse embryos two groups of experiment were carried out. In experiment 1, pronuclear stage mouse embryos were co-cultured with Vero cells in RPMI medium and were examined under microscope for 4 days with 24h interval. The results showed co-cultured group developed better compared to control (87% to 80%, P<0.05) although, the rate ...
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