نتایج جستجو برای: embryo

تعداد نتایج: 67513  

Journal: :avicenna journal of medical biotechnology 0

background: successful embryo transfer (et) technique is a fateful step of all efforts to achieve live births from in vitro produced embryos in assisted reproductive techniques or in knockout, transgenic or cloned animal projects. small reproductive tract of mice and limitation of current techniques may not well satisfy the requirements for mass production of genetically modified mice. genetic ...

Journal: :international journal of reproductive biomedicine 0
nezhat moossavifar nayereh khadem alieh torabizadeh

background: it has been demonstrated that performing a mock embryo transfer (et) significantly improves the pregnancy rate in ivf cycles. the mock et could be performed prior to the stimulation cycle or immediately before real et. the problem of the first procedure is the possibility of variation in the uterine position and or cervico�uterine angle. objective: the purpose of this study was to d...

Journal: :international journal of reproductive biomedicine 0
soheila arefi ahmad hoseini fattaneh farifteh hojjat zeraati

background: natural endometrium in frozen-thawed embryo transfer (fet) may have some benefits upon implantation in patients with repeated implantation failure (rif). it might be due to possible differences between natural and stimulated endometrial growth factors and cytokins secretions. objective: the objective of this study was to compare the pregnancy rate of fet on modified natural cycle ve...

Journal: :the archives of bone and joint surgery 0
edward k. rodriguez orthopedic trauma beth israel deaconess medical center, harvard medical school, boston, usa jeeva munasinghe national institute of neurological disorders and stroke, national institutes of health, bethesda, usa

background: in this feasibility study, a mechanically loaded in-vitro tissue culture model of joint morphogenesis using the isolated lower extremity of the 8 day old chick embryo was developed to assess the effects of mechanical loading on joint morphogenesis. methods: the developed in-vitro system allows controlled flexion and extension of the chick embryonic knee with a range of motion of 20 ...

Journal: :international journal of reproductive biomedicine 0
leila alizadeh reza omani samani

the use of donated embryos has offered hope for infertile couples who have no other means to have children. in iran, fertility centers use fertile couples as embryo donors. in this paper, the advantages and disadvantages of this procedure will be discussed. we conclude that embryo-donation should be performed with frozen embryos thus preventing healthy donors from being harmed by fertility drug...

Journal: :journal of medicinal plants and by-products 0

embryo culture were used to produce inter specific walnut hybrid plants between juglans nigra l. and j. regia l. developed ovaries were collected from j. rejia female flowers which were pollinated with j. nigra pollen grain by high dusting on a mature tree. in order to isolate embryos, exocarps were aseptically removed. isolated embryos from ovules at different developmental stages were transfe...

Journal: :international journal of fertility and sterility 0
amjad hossain john phelps ashok agarwal eduardo sanz maha mahadevan

the society for assisted reproductive technology (sart) method of embryo grading is unique, simple, and widely practiced, and its use has been mandatory for sart membership programs since 2010. developed by sart in 2006, the current embryo grading system categories, “good, fair, and poor,” are limited because they do not describe the best 1-2 embryos in the interest of keeping pace with the shi...

Journal: :international journal of advanced biological and biomedical research 2014
hadi tavakkoli sajedeh salandari

objective: the objective of this study was to investigate the pathological alterations of methionine for chicken embryo.in recent years, amino acids are used in veterinary medicine for many purposes. they injected into hatching eggs to increase chick body weight and performance at hatch, but the adverse effects of amino acids have always been a major concern. there is scant information availabl...

Amjad Hossain, Ashok Agarwal Eduardo Sanz John Phelps Maha Mahadevan

The Society for Assisted Reproductive Technology (SART) method of embryo grading is unique, simple, and widely practiced, and its use has been mandatory for SART membership programs since 2010. Developed by SART in 2006, the current embryo grading system categories, “good, fair, and poor,” are limited because they do not describe the best 1-2 embryos in the interest of keeping pace with the shi...

Journal: :iranian journal of pharmaceutical sciences 0
omid sabzevari department of toxicology and pharmacology, faculty of pharmacy behnaz etemadi department of toxicology and pharmacology, faculty of pharmacy hassan marzban department of embryology, faculty of medicine, tehran university of medical sciences, tehran, iran syyed nasser ostad department of toxicology and pharmacology, faculty of pharmacy

diethylstilbestrol (des) was widely used in the past, as the morning after contraception, but its application became extremely limited due to several complications including delayed clear cell adenocarcinoma in female infants. however, the use of des increased during the past decade for hormone replacement therapy. the aim of this study was to investigate possible teratogenicity of this synthet...

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