Results 31 to 40 of about 81,569 (272)

Utilizing Playdoh in the Classroom to Construct a 3D Model Depicting Cellular Movements and Tissue Remodeling during Human Gastrulation, Early Organogenesis, and Embryonic Folding

open access: yesJournal of Microbiology & Biology Education, 2021
In classroom studies of mammalian embryology, students must fully grasp the cellular and tissue remodeling needed to initiate gastrulation to ensure comprehension of forthcoming developmental processes such as tissue specification and organogenesis ...
Ryan Hesterman   +6 more
doaj   +1 more source

Gene expression analysis of bovine embryonic disc, trophoblast and parietal hypoblast at the start of gastrulation [PDF]

open access: yes, 2017
In cattle early gastrulation-stage embryos (Stage 5), four tissues can be discerned: (i) the top layer of the embryonic disc consisting of embryonic ectoderm (EmE); (ii) the bottom layer of the disc consisting of mesoderm, endoderm and visceral hypoblast
Berg, D   +3 more
core   +2 more sources

Current perspectives of the signaling pathways directing neural crest induction. [PDF]

open access: yes, 2012
The neural crest is a migratory population of embryonic cells with a tremendous potential to differentiate and contribute to nearly every organ system in the adult body.
García-Castro, Martín I   +1 more
core   +2 more sources

Bmp Signal Gradient Modulates Convergent Cell Movement via Xarhgef3.2 during Gastrulation of Xenopus Embryos

open access: yesCells, 2021
Gastrulation is a critical step in the establishment of a basic body plan during development. Convergence and extension (CE) cell movements organize germ layers during gastrulation.
Jaeho Yoon   +6 more
doaj   +1 more source

Complex interactions between cis-regulatory modules in native conformation are critical for Drosophila snail expression [PDF]

open access: yes, 2011
It has been shown in several organisms that multiple cis-regulatory modules (CRMs) of a gene locus can be active concurrently to support similar spatiotemporal expression.
Dunipace, Leslie   +2 more
core   +3 more sources

A Developmental Requirement for HIRA-Dependent H3.3 Deposition Revealed at Gastrulation in Xenopus

open access: yesCell Reports, 2012
Discovering how histone variants that mark distinct chromatin regions affect a developmental program is a major challenge in the epigenetics field. To assess the importance of the H3.3 histone variant and its dedicated histone chaperone HIRA, we used an ...
Emmanuelle Szenker   +2 more
doaj   +1 more source

Folded gastrulation and T48 drive the evolution of coordinated mesoderm internalization in flies

open access: yeseLife, 2016
Gastrulation constitutes a fundamental yet diverse morphogenetic process of metazoan development. Modes of gastrulation range from stochastic translocation of individual cells to coordinated infolding of an epithelial sheet.
Silvia Urbansky   +3 more
doaj   +1 more source

Measurement of junctional tension in epithelial cells at the onset of primitive streak formation in the chick embryo via non-destructive optical manipulation [PDF]

open access: yes, 2020
Directional cell intercalations of epithelial cells during gastrulation has in several organisms been shown to be associated with a planar cell polarity in the organisation of the actin-myosin cytoskeleton and is postulated to reflect directional tension
Antin   +39 more
core   +4 more sources

Adhesive Crosstalk in Gastrulation [PDF]

open access: yesDevelopmental Cell, 2003
Recent studies show that signaling through integrin receptors is required for normal cell movements during Xenopus gastrulation. Integrins function in this process by modulating the activity of cadherin adhesion molecules within tissues undergoing convergence and extension movements.
Montero, J., Heisenberg, C.
openaire   +3 more sources

Retinoic Acid is Required for Normal Morphogenetic Movements During Gastrulation

open access: yesFrontiers in Cell and Developmental Biology, 2022
Retinoic acid (RA) is a central regulatory signal that controls numerous developmental processes in vertebrate embryos. Although activation of Hox expression is considered one of the earliest functions of RA signaling in the embryo, there is evidence ...
Michal Gur   +3 more
doaj   +1 more source

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