نتایج جستجو برای: oocyte morphology
تعداد نتایج: 160282 فیلتر نتایج به سال:
BACKGROUND Abnormalities of oocyte morphology affect embryo quality and viability. Whether morphological abnormalities of the oocyte influence cryosurvival and further development of derived embryos is not known. The aim of this study was to compare cryosurvival and progression to the blastocyst stage of frozen-thawed embryos derived from normal and abnormal oocytes. METHODS A total of 5292 G...
OBJECTIVE To develop an in vitro strategy to support the growth of early-stage follicles and produce mature oocytes competent for fertilization. DESIGN Whole ovaries from 8-day-old mice were cultured for 4 days, and then secondary follicles were isolated and cultured for 12 days in a three-dimensional alginate or fibrin-alginate (FA) hydrogel matrix. SETTING University-affiliated laboratory...
Although human diseases of retrotransposition-derived etiology have been documented, retrotransposon RNA expression and the occurrence of retrotransposition events in the human oocyte are not studied. We investigated the RNA expression of L1 and HERV-K10 retrotransposons in human oocytes by RT-PCR analysis with designed primers. Using denucleated germinal vesicles (GVs), we detected RT-PCR prod...
BACKGROUND A biochemical marker for embryo development would increase the chance of a successful pregnancy with IVF by optimizing oocyte and embryo selection, and allow fewer embryos to be transferred. In this study, we correlated cumulus granulosa cell gene expression of hyaluronic acid synthase 2 (HAS2), cyclooxygenase 2 (COX2; PTGS2) and gremlin (GREM1) with subsequent embryo development in ...
background: infected with intestinal parasites is one of the most important health and economical problems, which could have different effects, such as diarrheal diseases or death associated. the purpose of this study was to determine the level of prevalence of cryptosporidium and giardia parasites in the vegetable marketed in ilam city. methods: this study was performed on 280 samples of fresh...
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