نتایج جستجو برای: unfertilized oocytes
تعداد نتایج: 23190 فیلتر نتایج به سال:
Background & Objectives: The rate of burnout may be high in unfertilized women, since there is little known about it, we designed a study to compare "couple burnout" between fertilized and unfertilized women in Tehran, Iran. Methods: All (60 women) referred unfertilized women to reproductive center of Imam Khomeini teaching hospital were included in our study during 2009 year. By systematic...
Fertilization of Xenopus laevis eggs triggers a period of rapid cell division comprising 12 nearly synchronous mitoses. Protein synthesis is required for these divisions, and new proteins appear after fertilization. Others proteins however, which are synthesized in the unfertilized egg, are no longer made in the early embryo. To identify such proteins, a differential screen of an egg cDNA libra...
In C. elegans, increased lifespan in daf-2 insulin/IGF-1 receptor mutants is accompanied by up-regulation of the MDL-1 Mad basic helix-loop-helix leucine zipper transcription factor. Here we describe the role of mdl-1 in C. elegans germline proliferation and aging. The deletion allele mdl-1(tm311) shortened lifespan, and did so significantly more so in long-lived daf-2 mutants implying that mdl...
In honeybees, the haplodiploid sex determination system promotes a unique embryogenesis process wherein females develop from fertilized eggs and males develop from unfertilized eggs. However, the developmental strategies of honeybees during early embryogenesis are virtually unknown. Similar to most animals, the honeybee oocytes are supplied with proteins and regulatory elements that support ear...
BACKGROUND In order to assess the role of binucleate giant oocytes for generating digynic triploidy, we studied their frequency, maturation patterns and chromosomal complements at metaphase II (MII) or after fertilization. METHODS Uncleaved, giant zygotes were incubated with podophyllotoxin and vinblastine, treated with hypotonic solution and fixed by a gradual fixation method. Giant MII oocy...
introduction: the purpose of this study was to investigate the effect of vitrification procedure on the survival, fertilization, development and ultrastructure of metaphase (mii) mouse oocyte. materials and methods: female nmri mice 6-10 weeks old were superovulated using ip injection of 10 iu hmg and 10 iu hcg. ovulated oocyte were collected from the ampullary portion of the oviducts at 12-13 ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید