Results 11 to 20 of about 417,774 (313)

Embryo Genetics [PDF]

open access: yesGenes, 2021
Advances in embryo and reproductive genetics have influenced clinical approaches to overcome infertility. Since the 1990s, many attempts have been made to decipher the genetic causes of infertility and to understand the role of chromosome aneuploidies in embryo potential.
Carmen Rubio, Carlos Simón
openaire   +2 more sources

The Effect of Light on Embryos and Embryo Culture [PDF]

open access: yesJournal of Reproductive and Stem Cell Biotechnology, 2012
In oviparous animals, the egg hatches outside of the body and is exposed to light; in some cases throughout the development of the fetus. In mammals, fertilization and the growth of embryos in vivo occurs in the dark but in human IVF, these embryos are exposed to variable light sources and intensities.
Kimball O. Pomeroy, Michael Reed
openaire   +1 more source

Engineering the embryo [PDF]

open access: yesProceedings of the National Academy of Sciences, 2011
Generation of transgenic mice by pronuclear DNA injection into fertilized eggs has been well-established for over 30 y (1). However, it remains a rather crude approach: injected sequences randomly insert as concatamers, they can be mutagenic, and they have variable expression depending on the site of integration, a phenomenon called position effects ...
Janet, Rossant   +2 more
openaire   +2 more sources

Direct and Latent Effects of Pathogen Exposure Across Native and Invasive Amphibian Life Stages

open access: yesFrontiers in Veterinary Science, 2021
Emerging infectious diseases are one of the multiple factors contributing to the current “biodiversity crisis”. As part of the worldwide biodiversity crisis, amphibian populations are declining globally.
Jenny Urbina   +3 more
doaj   +1 more source

Cloning of embryos [PDF]

open access: yesBioscientifica Proceedings, 2020
Nuclear transfer for the study of differentiation in amphibians has been used since the 1950s, but not until recently have the same procedures been applied successfully to some mammals. Nuclear transfer, as developed for the amphibian, is successful in sheep, cattle, rabbit, and pig, but not mouse embryos.
R S, Prather, N L, First
openaire   +2 more sources

An unusual finding of Sepietta oweniana (Cephalopoda: Sepiolidae) egg clutch

open access: yesScientia Marina, 2010
An unusual finding of Sepietta oweniana egg clutch at 544 m depth is described within an updating study of the reproductive aspects of the species in Sardinian waters.
Danila Cuccu   +5 more
doaj   +1 more source

Fluorescence In Situ Hybridization on Early Porcine Embryos [PDF]

open access: yes, 2010
Insight into the normal and abnormal function of an interphase nucleus can be revealed by using fluorescence in situ hybridization (FISH) to determine chromosome copy number and/or the nuclear position of loci or chromosome territories.
Sturmey, Roger G.   +11 more
core   +1 more source

Fresh or frozen? Classifying ‘spare' embryos for donation to human embryonic stem cell research [PDF]

open access: yes, 2010
This article is available open access, funded by the Wellcome Trust. It is distributed under a Creative Commons License (http://creativecommons.org/licenses/by/3.0/). Copyright @ 2010 Elsevier Ltd.United Kingdom (UK) funding to build human embryonic stem
Williams, C   +11 more
core   +1 more source

Karyotype characterization, constitutive heterochromatin and nucleolus organizer regions of Paranaita opima (Coleoptera, Chrysomelidae, Alticinae)

open access: yesGenetics and Molecular Biology, 2006
Species of the subtribe Oedionychina not only have a highly uniform diploid number of 2n = 22 (20+X+y) but have the karyotypic peculiarity of possessing extremely large sex chromosomes.
Mara Cristina de Almeida   +2 more
doaj   +1 more source

Equilibrium vitrification of mouse embryos at various developmental stages using low concentrations of cryoprotectants

open access: yesThe Journal of Reproduction and Development, 2021
We previously developed a new vitrification method (equilibrium vitrification) by which two-cell mouse embryos can be vitrified in liquid nitrogen in a highly dehydrated/concentrated state using low concentrations of cryoprotectants. In the present study,
Juan QIU   +3 more
doaj   +1 more source

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