Results 61 to 70 of about 264,880 (269)
The Effect of the Follicle Size and Follicle Number Per Ovary on Oocyte Quality of Local Goat
Jurnal Kedokteran Hewan, 2007 This research was aimed to find out the relationship between the diameter of follicle and the different of follicle number on oocyte quality of local goat. The oocyte originated from the ovary was taken from the Slaughterhouse in Banda Aceh.
Arman Sayuti +4 more
doaj +1 more source
Oocyte Maturation and Development [PDF]
F1000Research, 2016 Sexual reproduction is essential for many organisms to propagate themselves. It requires the formation of haploid female and male gametes: oocytes and sperms. These specialized cells are generated through meiosis, a particular type of cell division that produces cells with recombined genomes that differ from their parental origin.
Verlhac, Marie-Hélène +1 more
openaire +4 more sources
Oocyte cryopreservation: where are we now?
Human Reproduction Update, 2016 INTRODUCTION Since the first live birth from oocyte cryopreservation three decades ago, oocyte cryopreservation has become an important component of ART.
C. Argyle, J. Harper, M. Davies
semanticscholar +1 more source
Oocyte stage-specific effects of MTOR determine granulosa cell fate and oocyte quality in mice
Proceedings of the National Academy of Sciences of the United States of America, 2018 Significance MTOR (mechanistic target of rapamycin), an integrator of pathways important for cellular metabolism, proliferation, and differentiation, is expressed at all stages of oocyte development.
Jing Guo +14 more
semanticscholar +1 more source
Reproductive Biology and Endocrinology, 2009 Background Ovarian stimulation for assisted reproductive technology (ART) overcomes the physiologic process to develop a single dominant follicle. However, following stimulation, egg recovery rates are not 100%.
Rinaudo Paolo F +7 more
doaj +1 more source
Actin cytoskeleton dynamics in mammalian oocyte meiosis†
Biology of Reproduction, 2018 During mitosis, cells undergo symmetrical cell division, while oocyte meiotic maturation undergoes two consecutive, asymmetric divisions that generate a totipotent haploid oocyte and two small polar bodies not involved in DNA replication.
Xing Duan, Shao‐Chen Sun
semanticscholar +1 more source
Retrieval of Mouse Oocytes [PDF]
Journal of Visualized Experiments, 2007 To date, only a few studies have reported successful manipulations of Peromyscus embryogenesis or reproductive biology. Together with the Peromyscus Genetic Stock Center (http://stkctr.biol.sc.edu), we are characterizing the salient differences needed to develop this system. A primary goal has been to optimize oocyte/early embryo retrieval.
Paul B. Vrana, Amanda R. Duselis
openaire +3 more sources
Species-specific differences in follicular antral sizes result from diffusion-based limitations on the thickness of the granulosa cell layer [PDF]
, 2013 The size of mature oocytes is similar across mammalian species, yet the size of ovarian follicles increases with species size, with some ovarian follicles reaching diameters more than 1000-fold the size of the enclosed oocyte. Here we show that the different follicular sizes can be explained with diffusion-based limitations on the thickness of the ...
arxiv +1 more source
Long-Range Repulsion Between Chromosomes in Mammalian Oocyte Spindles [PDF]
arXiv, 2022 During eukaryotic cell division, a microtubule-based structure called the spindle exerts forces on chromosomes, thereby organizing and segregating them Extensive work demonstrates that the forces acting parallel to the spindle axis, including those responsible for separating sister chromatids, are generated by microtubule polymerization and ...
arxiv
Mutations in TUBB8 and Human Oocyte Meiotic Arrest.
New England Journal of Medicine, 2016 Background Human reproduction depends on the fusion of a mature oocyte with a sperm cell to form a fertilized egg. The genetic events that lead to the arrest of human oocyte maturation are unknown.
Ruizhi Feng +32 more
semanticscholar +1 more source