Results 61 to 70 of about 122,819 (363)
FASEB BioAdvances, Volume 4, Issue 12, Page 775-797, December 2022., 2022 Abstract During initial maternal recognition of pregnancy (MRP), the equine embryo displays a series of unique events characterized by rapid blastocyst expansion, secretion of a diverse array of molecules, and transuterine migration to interact with the uterine surface.
Alba Rudolf Vegas +6 more
wiley +1 more source
Telomere lengths in human oocytes, cleavage stage embryos and blastocysts [PDF]
, 2010 Telomeres are repeated sequences that protect the ends of chromosomes and harbour DNA-repair proteins. Telomeres shorten during each cell division in the absence of telomerase.
Achi +42 more
core +2 more sources
Aneuploidy in the Human Blastocyst
Cytogenetic and Genome Research, 2011 Studies of human cleavage stage embryos, 3 days after fertilization of the oocyte, have revealed remarkably high levels of chromosome abnormality. In addition to meiotic errors derived from the gametes, principally the oocyte, mitotic errors occurring after fertilization are also common, leading to widespread chromosomal mosaicism.
Fragouli, E, Wells, D
openaire +3 more sources
Endocrine journal, 2019 Blastocyst implantation contains the following three processes: apposition, attachment, and invasion of the blastocyst. Ovarian hormone progesterone (P4) regulates these processes exquisitely.
Yasushi Hirota
semanticscholar +1 more source
Cryopreservation of equine oocytes: looking into the crystal ball [PDF]
, 2020 In vitro embryo production has evolved rapidly in the horse over the past decade, but blastocyst rates from vitrified equine oocytes remain quite poor and further research is needed to warrant application.
Angel Velez, Daniel +4 more
core +2 more sources
Mechanics of mouse blastocyst hatching revealed by a hydrogel-based microdeformation assay
Proceedings of the National Academy of Sciences of the United States of America, 2018 Significance Blastocyst hatching is crucial for implantation of mammalian embryos and a common failure point during in vitro fertilization (IVF). We have little knowledge of the mechanical basis whereby an embryo hatches out of the zona pellucida.
K. Leonavicius +5 more
semanticscholar +1 more source
Regulated mitochondrial DNA replication during oocyte maturation is essential for successful porcine embryonic development. [PDF]
, 2006 Cellular ATP is mainly generated through mitochondrial oxidative phosphorylation, which is dependent on mitochondrial DNA (mtDNA). We have previously demonstrated the importance of oocyte mtDNA for porcine and human fertilization.
Alexander, Jan +26 more
core +7 more sources
Development and validation of deep learning based embryo selection across multiple days of transfer [PDF]
arXiv, 2022 This work describes the development and validation of a fully automated deep learning model, iDAScore v2.0, for the evaluation of embryos incubated for 2, 3, and 5 or more days. The model is trained and evaluated on an extensive and diverse dataset including 181,428 embryos from 22 IVF clinics across the world.
arxiv
In vitro production of bovine embryos derived from individual donors in the Corral® dish [PDF]
, 2017 Background: Since the identity of the embryo is of outmost importance during commercial in vitro embryo production, bovine oocytes and embryos have to be cultured strictly per donor.
A Cebrian-Serrano +38 more
core +2 more sources
Regulation of blastocyst formation
Frontiers in Bioscience, 2001 Preimplantation or pre-attachment development encompasses the "free"-living period of mammalian embryogenesis, which directs development of the zygote through to the blastocyst stage. Blastocyst formation is essential for implantation, establishment of pregnancy and is a principal determinant of embryo quality prior to embryo transfer.
Watson, A J, Barcroft, L C
openaire +5 more sources