Results 251 to 260 of about 161,152 (304)
Some of the next articles are maybe not open access.
Embryo Culture and Epigenetics
2012During preimplantation development, major epigenetic reprogramming occurs, erasing gametic modifications, and establishing embryonic epigenetic modifications. Given the plasticity of these modifications, they are susceptible to disruption by assisted reproductive technologies, including embryo culture. The current state of evidence is presented for the
Brenna A Market, Velker +2 more
openaire +2 more sources
2006
Human embryonic stem cells (hESCs) are derived from preimplantation embryos. Approximately 60% of human embryos are blocked during in vitro development. Although statistics are inconclusive, experience demonstrates that hESCs are more effectively derived from high-quality embryos.
Amparo, Mercader +2 more
openaire +2 more sources
Human embryonic stem cells (hESCs) are derived from preimplantation embryos. Approximately 60% of human embryos are blocked during in vitro development. Although statistics are inconclusive, experience demonstrates that hESCs are more effectively derived from high-quality embryos.
Amparo, Mercader +2 more
openaire +2 more sources
The culture of postimplantation embryos
Human Reproduction, 1991Culture methods for postimplantation embryos are now widely used in studies of embryo physiology, growth and development. Available methods support growth and development of rat and mouse embryos at all stages of organogenesis. The best results are obtained from embryos between head fold and early limb bud stages; overall growth and differentiation of ...
openaire +2 more sources
Culture Systems: Embryo Co-Culture
2012During the 1970s, domestic animal biotechnology, i.e., embryo transfer in farm animals, was confronted with the problem of embryonic developmental arrest observed in vitro, especially during the cycle in which maternal to zygotic transition (MZT) cycle takes place.
Yves J R, Ménézo +4 more
openaire +2 more sources
Advances in Embryo Culture Systems
Seminars in Reproductive Medicine, 2012The growth of mammalian embryos in the laboratory has progressed nicely over the last 60 to 70 years. This has been important for basic studies of preimplantation embryo regulation of growth, development, and differentiation. It has also been critical for the establishment of assisted reproductive technologies in the clinical setting to treat ...
Gary D, Smith, Andre, Monteiro da Rocha
openaire +2 more sources
In Vitro Culture of Bovine Embryos
American Journal of Veterinary Research, 1973SUMMARY Thirty-five heifers were injected with combinations of gonadotrophic hormones and subsequently bred with freshly collected and extended or frozen semen. Embryos were surgically removed from the uterine tube and uterus at 48 to 72 hours after the administration of the ovulating hormone.
B E, McKenzie, R M, Kenney
openaire +2 more sources
Embryo Culture Conditions and the Epigenome
Seminars in Reproductive Medicine, 2018AbstractAssisted reproductive technologies (ARTs) lead to an increased risk for pregnancy complications, congenital abnormalities, and specific imprinting disorders. Epigenetic dysfunction is thought to be one common mechanism which may be affecting these outcomes.
Sneha, Mani, Monica, Mainigi
openaire +2 more sources
Culture of Mink Preimplantation Embryos
2019The reproduction of the mink, Neovison vison, has been extensively studied over the past 70 years. The endocrine control of pregnancy is reasonably well understood, but our understanding of early embryo development is limited. The mink is one of the best characterized mammals for the study of embryonic diapause, but in order to unravel the complex ...
Jane C, Fenelon, Bruce D, Murphy
openaire +2 more sources
2012
Although the rabbit is used extensively in developmental toxicity testing, relatively little is known about the fundamental developmental biology of this species let alone mechanisms underlying developmental toxicity. This paucity of information about the rabbit is partly due to the historic lack of whole embryo culture (WEC) methods for the rabbit ...
Valerie A, Marshall, Edward W, Carney
openaire +2 more sources
Although the rabbit is used extensively in developmental toxicity testing, relatively little is known about the fundamental developmental biology of this species let alone mechanisms underlying developmental toxicity. This paucity of information about the rabbit is partly due to the historic lack of whole embryo culture (WEC) methods for the rabbit ...
Valerie A, Marshall, Edward W, Carney
openaire +2 more sources