Large, long range tensile forces drive convergence during Xenopus blastopore closure and body axis elongation. [PDF]
Elife, 2018 Abstract Indirect evidence suggests that blastopore closure during gastrulation of anamniotes, including amphibians such as Xenopus laevis, depends on circumblastoporal convergence forces generated by the marginal zone (MZ), but direct ...
Shook DR +3 more
europepmc +5 more sources
Regional requirements for Dishevelled signaling during Xenopus gastrulation: separable effects on blastopore closure, mesendoderm internalization and archenteron formation [PDF]
Development, 2004 During amphibian gastrulation, the embryo is transformed by the combined actions of several different tissues. Paradoxically, many of these morphogenetic processes can occur autonomously in tissue explants, yet the tissues in intact embryos must interact and be coordinated with one another in order to accomplish the major goals of gastrulation: closure
Ewald, Andrew J. +4 more
openaire +5 more sources
New Insights Into Mesoderm and Endoderm Development, and the Nature of the Onychophoran Blastopore [PDF]
Frontiers in ZoologyBackground Early during onychophoran development and prior to the formation of the germ band, a posterior tissue thickening forms the posterior pit.
Graham E. Budd, Ralf Janssen
exaly +3 more sources
Pre-oviposition development of the brown anole (Anolis sagrei). [PDF]
Dev DynAbstract Background The brown anole, Anolis sagrei, has emerged as a representative squamate species for developmental studies during the past decades. Novel functional tools have been established to manipulate embryogenesis through genome editing or the introduction of small molecule inhibitors, and their effective use requires a thorough ...
Weberling A +9 more
europepmc +2 more sources
Molecular anatomy of emerging Xenopus left-right organizer at successive developmental stages. [PDF]
Dev DynAbstract Background Vertebrate left–right symmetry breaking is preceded by formation of left–right organizer. In Amphibian, this structure is formed by gastrocoel roof plate, which emerges from superficial suprablastoporal cells. GRP is subdivided into medial area, which generates leftward flow by rotating monocilia and lateral Nodal1 expressing areas,
Petri N +3 more
europepmc +2 more sources
SEM observation of the External Yolk Syncytial Layer in Blastopore Closure of the Medaka, Oryzias latipes [PDF]
Development, Growth & Differentiation, 1985 The embryonic surface of the teleost, Oryzias latipes, was observed by scanning electron microscopy (SEM) to examine the last phase of epiboly or blastopore closure. The surface of the external yolk syncytial layer (E–YSL), a surface cytoplasmic layer encompassing the yolk sphere situated beyond the blastoderm, was highly undulated with surface folds ...
openaire +2 more sources
eLife, 2018 Understanding the coordination of the forces generated in embryos by two processes, convergent extension and convergent thickening, is key to understanding how a hollow sphere of cells develops into an elongated embryo.
Shinuo Weng, John B Wallingford
doaj +1 more source
CLOSURE #8: Kieler e-Journal für Comicforschung [PDF]
, 2021 Was verbindet zwei Panels, die nebeneinander stehen? Die Antwort auf diese Frage lautet zumeist ›eine Erzählung.‹ So verlangt zum Beispiel Scott McCloud, ›einige der Geheimnisse zu lüften, die die unsichtbare Kunst des Comic-Erzählens umgeben‹ (74).
core +1 more source
Biomechanics and the thermotolerance of development.
PLoS ONE, 2014 Successful completion of development requires coordination of patterning events with morphogenetic movements. Environmental variability challenges this coordination.
Michelangelo von Dassow +2 more
doaj +1 more source
Variation in the schedules of somite and neural development in frogs. [PDF]
, 2012 The timing of notochrod, somite, and neural development was analyzed in the embryos of six differnt frog species, which have been divided into two groups, according to their developmental speed.
Del Pino Veintimilla, Eugenia
core +1 more source