Results 61 to 70 of about 24,553 (253)

Cellular aspect ratio and cell division mechanics underlie the patterning of cell progeny in diverse mammalian epithelia. [PDF]

open access: yes, 2018
Cell division is essential to expand, shape, and replenish epithelia. In the adult small intestine, cells from a common progenitor intermix with other lineages, whereas cell progeny in many other epithelia form contiguous patches.
Castillo-Azofeifa, David   +7 more
core   +1 more source

Nature of the hypoblastic influence on the chick embryo epiblast [PDF]

open access: yesDevelopment, 1983
ABSTRACT Stage XIII chick blastoderms deprived of the marginal zone, the area opaca and the posterior half of the hypoblast, when incubated further developed axes whose orientation in 50 % of the cases was according to the original blastoderm’s orientation, whilst in 50 % of the cases they developed at 90° from the posterior side.
E, Mitrani, Y, Shimoni, H, Eyal-Giladi
openaire   +2 more sources

Inverse agonism of retinoic acid receptors directs epiblast cells into the paraxial mesoderm lineage

open access: yesStem Cell Research, 2018
We have investigated the differentiation of paraxial mesoderm from mouse embryonic stem cells utilizing a Tbx6-EYFP/Brachyury (T)-Cherry dual reporter system.
Ryan P. Russell   +3 more
doaj   +1 more source

Nuclear re-organisation of the Hoxb complex during mouse embryonic development [PDF]

open access: yes, 2005
The spatial and temporal co-linear expression of Hox genes during development is an exquisite example of programmed gene expression. The precise mechanisms underpinning this are not known.
Bickmore, Wendy A   +3 more
core   +2 more sources

Asymmetry in the frequency and position of mitosis in the mouse embryo epiblast at gastrulation

open access: yesEMBO Reports, 2020
At gastrulation, a subpopulation of epiblast cells constitutes a transient posteriorly located structure called the primitive streak, where cells that undergo epithelial–mesenchymal transition make up the mesoderm and endoderm lineages.
Navrita Mathiah   +7 more
semanticscholar   +1 more source

Single-Cell Landscape of Transcriptional Heterogeneity and Cell Fate Decisions during Mouse Early Gastrulation

open access: yesCell Reports, 2017
Summary: The mouse inner cell mass (ICM) segregates into the epiblast and primitive endoderm (PrE) lineages coincident with implantation of the embryo. The epiblast subsequently undergoes considerable expansion of cell numbers prior to gastrulation.
Hisham Mohammed   +11 more
doaj   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

Revealing cell populations catching the early stages of human embryo development in naive pluripotent stem cell cultures

open access: yesStem Cell Reports, 2023
Summary: Naive human pluripotent stem cells (hPSCs) are defined as the in vitro counterpart of the human preimplantation embryo’s epiblast and are used as a model system to study developmental processes.
Marta Moya-Jódar   +13 more
doaj   +1 more source

Competence, specification and commitment in otic placode induction [PDF]

open access: yes, 2000
The inner ear is induced from cranial ectoderm adjacent to the hindbrain. Despite almost a century of study, the molecular mechanisms of inner ear induction remain obscure. We have identified four genes expressed very early in the anlage of the inner ear,
Bronner-Fraser, Marianne   +1 more
core  

Major transcriptome re-organisation and abrupt changes in signalling, cell cycle and chromatin regulation at neural differentiation in vivo [PDF]

open access: yes, 2014
Here, we exploit the spatial separation of temporal events of neural differentiation in the elongating chick body axis to provide the first analysis of transcriptome change in progressively more differentiated neural cell populations in vivo.
Abranches   +57 more
core   +5 more sources

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