Results 101 to 110 of about 40,656 (278)

EphrinB/EphB signaling controls embryonic germ layer separation by contact-induced cell detachment.

open access: yesPLoS Biology, 2011
BackgroundThe primordial organization of the metazoan body is achieved during gastrulation by the establishment of the germ layers. Adhesion differences between ectoderm, mesoderm, and endoderm cells could in principle be sufficient to maintain germ ...
Nazanin Rohani   +4 more
doaj   +1 more source

Secretopathies emerge as a new class of neurocristopathies

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Neural crest cells are a transient embryonic population of cells that give rise to a wide range of structures, including craniofacial cartilage and bone, peripheral neurons and glia, as well as components of the cardiac outflow tract, among others.
Amanda Teixeira   +3 more
wiley   +1 more source

Goofy/123Cre lineage tracing differentiates olfactory and vomeronasal neurons from GnRH‐1 and terminal nerve neurons during neuronal migration and reveals additional olfactory placode‐derived cells in the brain

open access: yesDevelopmental Dynamics, EarlyView.
Abstract The olfactory placode (OP) generates a broad array of chemosensory neurons in the nasal region, including olfactory sensory neurons, vomeronasal sensory neurons, neurons of the septal organ, and Grueneberg ganglion. During invagination, the OP also generates migratory neuronal populations, including gonadotropin‐releasing hormone‐1 (GnRH‐1 ...
Enrico Amato Jr.   +5 more
wiley   +1 more source

Development of teratomas from the ectoderm of mouse egg cylinders.

open access: yes, 1976
We studied the developmental capacities of the primary ectoderm and endoderm of 6-day embryos of hybrids between strains 129/Sv-SIJ C P and A/He mice by grafting these germ layers into the testes of adult mice for 30 days. Grafts of embryonic ectoderm
Stevens, L C, Diwan, S B
core  

Mechanisms of ectodermal organogenesis

open access: yesDevelopmental Biology, 2003
All ectodermal organs, e.g. hair, teeth, and many exocrine glands, originate from two adjacent tissue layers: the epithelium and the mesenchyme. Similar sequential and reciprocal interactions between the epithelium and mesenchyme regulate the early steps of development in all ectodermal organs.
Pispa, Johanna, Thesleff, Irma
openaire   +2 more sources

Environmental Pesticide Exposure in the Etiology of Pediatric Brain Tumors and Leukemia: A Scoping Review of Epidemiological Studies

open access: yesInternational Journal of Cancer, EarlyView.
ABSTRACT Pediatric cancer is a significant cause of morbidity and mortality in children. The etiologies of pediatric cancer are largely unknown, but environmental pesticide exposures are likely to contribute. Chronic low‐dose exposure to pesticide mixtures through drinking water is a growing concern in agricultural communities.
Grace N. VanDeSteeg   +4 more
wiley   +1 more source

Transport Functions of Ectoderm Epithelial Cells Forming Dental Enamel

open access: yes, 2020
Chapter 11. Transport Functions of Ectoderm Epithelial Cells Forming Dental Enamel Michael L. Paine, Alan Boyde, and Rodrigo S. Lacruz Abstract:The development of enamel encapsulates fundamental cellular processes associated with ...
Alan Boyde   +5 more
core   +1 more source

Modeling Mammalian Commitment to the Neural Lineage Using Embryos and Embryonic Stem Cells

open access: yesFrontiers in Physiology, 2019
Early mammalian embryogenesis relies on a large range of cellular and molecular mechanisms to guide cell fate. In this highly complex interacting system, molecular circuitry tightly controls emergent properties, including cell differentiation ...
Rachel A. Shparberg   +2 more
doaj   +1 more source

Calpain Proteases and the Evolving Signaling Network in Insect Embryonic Patterning

open access: yesJournal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
Insect embryonic Dorsal‐Ventral (DV) patterning relies on the BMP and Toll pathways to different extents. Calcium‐dependent cystein proteases of the Calpain family also exert an important function to pattern the DV axis. In Drosophila, Calpain A cleaves the Cactus/IkappaB inhibitor and modifies Toll signals in ventral regions of the embryo. In Rhodnius
Alison Julio, Helena Araujo
wiley   +1 more source

Formation of a “Pre-mouth Array” from the Extreme Anterior Domain Is Directed by Neural Crest and Wnt/PCP Signaling

open access: yesCell Reports, 2016
The mouth arises from the extreme anterior domain (EAD), a region where the ectoderm and endoderm are directly juxtaposed. Here, we identify a “pre-mouth array” in Xenopus that forms soon after the cranial neural crest has migrated to lie on either side ...
Laura Jacox   +4 more
doaj   +1 more source

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