نتایج جستجو برای: cryopreservation
تعداد نتایج: 7939 فیلتر نتایج به سال:
Medical treatments at the beginning and end of human life are highly contested in public discourse. Our study reveals factors shaping acceptance social egg freezing (or oocyte cryopreservation) as an assisted reproduction technology (ART) general public. Based on theory moral contextualism literature medical ethics, we deduce potential influencing attitudes toward cryopreservation (for example,...
Fertility preservation by whole ovarian cryopreservation requires successful cryopreservation of both the ovary and its vascular supply. Previous work has indicated detrimental effects of both perfusion and cryopreservation on the ovarian vasculature. This study assessed the effects of blood perfusion, alone or in combination with cryopreservation, on functional effects in the follicle populati...
An existing cryopreservation method for liver slices applies 12% dimethylsulfoxide and rapid freezing. We found that cells in rat liver slices cryopreserved in this manner deteriorated rapidly upon culturing. To improve this cryopreservation method, we varied the dimethylsulfoxide concentration (0, 12, 18, and 30%), the cryopreservation medium (Williams medium E, fetal calf serum, and Universit...
The maintenance of traditional microalgae collections based on liquid and solid media is labour intensive, costly and subject to contamination and genetic drift. Cryopreservation is therefore the method of choice for the maintenance of microalgae culture collections, but success is limited for many species. Although the mechanisms underlying cryopreservation are understood in general, many tech...
PURPOSE Cancer treatments for young women can permanently or temporarily affect fertility. The purpose of this retrospective analysis was to present the clinical experience and ethical considerations of fertility preservation in female oncology patients in a tertiary gynaecological department. METHODS Since 2002, in 37 patients fertility preservation was performed according to an institutiona...
In recent years, preservation of fertility in women has been of great importance, especially in patients exposed to deleterious conditions on fertility. Thus, cryopreservation of human gametes, embryos and ovarian tissue has become an essential part of assisted reproduction. This approach limits the number of embryos transferred, while supernumerary oocytes and/ or embryos can be used in subseq...
Background. Cryopreservation of spermatozoa with the best morphofunctional characteristics may allow their use for assisted reproductive technologies in goat breeding throughout year to effectively increase livestock. Aim. To evaluate influence seasons on morphological and morphometric fresh cryopreserved sperm. Methods. The ejaculate samples three sexually mature bucks Saanen breed were obtain...
Cryopreservation of growing oocytes enriches the choice of timing and location of artificial embryo production. However, completion of oocyte growth after warming is crucial when using such cryopreserved oocytes. Our research objective was to develop a sequential system that incorporates cryopreservation of growing bovine oocytes and their subsequent in vitro growth. Oocyte-granulosa cell compl...
Cryopreservation is a long-term storage technique to preserve the biological material without deterioration for extended period of time at least several thousands of years. The ability to preserve and store both maternal and paternal gametes provides a reliable source of fish genetic material for scientific and aquaculture purposes as well as for conservation of biodiversity. Successful cryopre...
because of the importance of iranian rice germplasm and its application in the rice breeding programs and international genetic resources exchanges, some researches are necessary to preserve these valuable genetic resources. for this purpose, the cryopreservation of the biological samples in liquid nitrogen at -196 °c can be used. in this research, the cryopreservation of the zygotic embryos of...
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