Results 31 to 40 of about 8,535 (205)

Lineage Differentiation Markers as a Proxy for Embryo Viability in Farm Ungulates

open access: yesFrontiers in Veterinary Science, 2021
Embryonic losses constitute a major burden for reproductive efficiency of farm animals. Pregnancy losses in ungulate species, which include cattle, pigs, sheep and goats, majorly occur during the second week of gestation, when the embryo experiences a ...
Alba Pérez-Gómez   +3 more
doaj   +1 more source

Periostin as a Biomarker of the Amniotic Membrane

open access: yesStem Cells International, 2012
Tracing the precise developmental origin of amnion and amnion-derived stem cells is still challenging and depends chiefly on analyzing powerful genetic model amniotes like mouse. Profound understanding of the fundamental differences in amnion development
Mariya P. Dobreva   +5 more
doaj   +1 more source

Oncopeltus fasciatus zen is essential for serosal tissue function in katatrepsis [PDF]

open access: yes, 2006
Unlike most Hox cluster genes, with their canonical role in anterior–posterior patterning of the embryo, the Hox3 orthologue of insects has diverged. Here, we investigate the zen orthologue in Oncopeltus fasciatus (Hemiptera:Heteroptera).
Akam, Michael   +3 more
core   +1 more source

Ancient expansion of the Hox cluster in Lepidoptera generated four homeobox genes implicated in extra-embryonic tissue formation [PDF]

open access: yes, 2014
Gene duplications within the conserved Hox cluster are rare in animal evolution, but in Lepidoptera an array of divergent Hox-related genes (Shx genes) has been reported between pb and zen.
Breuker, Casper J.   +6 more
core   +10 more sources

Male Embryos Produced in vitro Deviate From Their in vivo Counterparts in Placental Gene Expression on Day 32 of Pregnancy

open access: yesFrontiers in Animal Science, 2022
This study compared the gene expression of extraembryonic membranes (EEM) from in vitro produced (IVP) and in vivo (AI) derived pregnancies. A piece of conceptus (day 18) or chorioallantois (day 32) was used for DNA and RNA isolation and sex ...
Jéssica N. Drum   +7 more
doaj   +1 more source

Distribution of O-Acetylated Sialic Acids among Target Host Tissues for Influenza Virus. [PDF]

open access: yes, 2017
Sialic acids (Sias) are important glycans displayed on the cells and tissues of many different animals and are frequent targets for binding and modification by pathogens, including influenza viruses.
Ajit Varki   +10 more
core   +3 more sources

Embryonic Folding

open access: yesMedEdPORTAL, 2007
Introduction Embryology is a challenging subject to learn because it involves three-dimensional structures within the embryo that are constantly changing as development proceeds. This animated module depicts embryonic folding, in which the flat embryonic
Donald Lowrie   +2 more
doaj   +1 more source

Microarray Analysis of Gene Expression in the Uterine Endometrium during the Implantation Period in Pigs [PDF]

open access: yesAsian-Australasian Journal of Animal Sciences, 2012
During embryo implantation in pigs, the uterine endometrium undergoes dramatic morphological and functional changes accompanied with dynamic gene expression.
Mingoo Kim   +6 more
doaj   +1 more source

A system to enrich for primitive streak-derivatives, definitive endoderm and mesoderm, from pluripotent cells in culture [PDF]

open access: yes, 2012
Two lineages of endoderm develop during mammalian embryogenesis, the primitive endoderm in the pre-implantation blastocyst and the definitive endoderm at gastrulation.
Familari, M.   +6 more
core   +4 more sources

Epiblast-specific Snai1 deletion results in embryonic lethality due to multiple vascular defects

open access: yesBMC Research Notes, 2009
Background Members of the Snail gene family, which encode zinc finger proteins that function as transcriptional repressors, play essential roles during embryonic development in vertebrates.
Gridley Thomas   +2 more
doaj   +1 more source

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