most of the systematic studies used in the development of human embryo culture media have been done first on mouse embryos. the general use of nmri outbred mice is a model for toxicology, teratology and pharmacology. nmri mouse embryo exhibit the two-cell block in vitro. the objective of this study was to evaluate and compare the effects of four kinds of culture media on the development of zygo...

Clinical studies have shown that in pathological conditions such as endometriosis and reproductive tract infection (male and female) there is an activation status of macrophages that produce large quantities of nitric oxide (NO) in addition to other effector molecules. Large amounts of NO may have embryotoxic roles and produce infertility. This study was designed to evaluate the effect of diffe...

background: little is understood about the regulation of gene expression during early goat embryo development. this study investigated the expression profile of 19 genes, known to be critical for early embryo development in mouse and human, at five different stages of goat in vitro embryo development (oocyte, 8-16 cell, morula, day-7 blastocyst, and day 14 blastocyst). materials and methods: st...

background: in the field of mammalian embryo culture, the putative influence of autocrine/ paracrine factor(s), produce by the embryos itself, is under investigation. a smaller medium drop can prevent dilution of this factor(s). objective: the objective of this study was to examine the effect of culture medium volume on in vitro development of mouse 2-cell embryos. materials and methods: the em...

the aim of this study was to analyze the incidence of stage of embryonic development, embryo quality and the time of transfer on pregnancy rate in embryo transfer program timed. we were worked a total of 23holsteincowsasembryo donors, super-ovulated with gonadotropin of pregnant mare serum (pmsg) (2500 3000ui).69 cows were used as recipients of holstein dairy heifers with an age of20 months and...

Until 1804, when Salisbury found that orchid seeds could germinate, the seeds were considered sterile. Much later, in 1889, Bernard's discovery of the special conditions necessary for their growth and development explained the lack of success in previous attempts to obtain plantules, and the success, although mediocre, when sowing of seed took place at the foot of the mother plant. Knowing the ...

Background: Hyaluronan (HA) is a structural component of extracellular matrix synthesised by HA synthases HAS1-3, which produce HA of different molecular sizes with distinct biological functions associated with reproductive processes. Hyaluronidase (HYAL) cleaves the HA into biologically active small fragments which are known to regulate cell proliferation through CD44 receptor signaling. HA is...

for sexual reproduction of allium hirtifolium, collected bulbs were planted in the field. in order to develop ovary embryo and seed setting, control self-pollination and natural open pollination took placed using honey bees under cages. ovary development and seed setting of a. hirtifolium extraordinary were affected by pollination and there was a significant difference between mean effect of se...

Most of the systematic studies used in the development of human embryo culture media have been done first on mouse embryos. The general use of NMRI outbred mice is a model for toxicology, teratology and pharmacology. NMRI mouse embryo exhibit the two-cell block in vitro. The objective of this study was to evaluate and compare the effects of four kinds of culture media on the development of zygo...