Results 71 to 80 of about 81,569 (272)
Spinal dysraphism illustrated; Embroyology revisited
Indian Journal of Radiology and Imaging, 2017 Spinal cord development occurs through three consecutive periods of gastrulation, primary nerulation and secondary neurulation. Aberration in these stages causes abnormalities of the spine and spinal cord, collectively referred as spinal dysraphism. They
Ullas V Acharya +4 more
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Meteorin regulates mesendoderm development by enhancing nodal expression [PDF]
During gastrulation, distinct lineage specification into three germ layers, the mesoderm, endoderm and ectoderm, occurs through an elaborate harmony between signaling molecules along the embryonic proximo-distal and anterior-posterior axes, and Nodal ...
HAN, JIN KWAN +7 more
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Calpain Proteases and the Evolving Signaling Network in Insect Embryonic Patterning
Journal 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
Review of: "Is gastrulation the most important time in your life?" [PDF]
, 2023 Luis Puelles
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Molecular recording of mammalian embryogenesis. [PDF]
, 2019 Ontogeny describes the emergence of complex multicellular organisms from single totipotent cells. This field is particularly challenging in mammals, owing to the indeterminate relationship between self-renewal and differentiation, variation in progenitor
Adamson, Britt +13 more
core +2 more sources
Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.ABSTRACT Aedes aegypti, a critical vector for tropical diseases, poses significant challenges for studying its embryogenesis due to difficulties in removing its rigid chorion and achieving effective fixation for in situ hybridization. Here, we present novel methodologies for fixation, dechorionation, DAPI staining, and in situ hybridization, enabling ...
Renata Coutinho‐dos‐Santos +8 more
wiley +1 more source
Distribution of tissue progenitors within the shield region of the zebrafish gastrula [PDF]
, 1995 The zebrafish has emerged as an important model system for the experimental analysis of vertebrate development because it is amenable to genetic analysis and because its optical clarity allows the movements and the differentiation of individual cells to ...
Fraser, Scott E., Shih, John
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Distinct modes of floor plate induction in the chick embryo [PDF]
, 2003 To begin to reconcile models of floor plate formation in the vertebrate neural tube, we have performed experiments aimed at understanding the development of the early floor plate in the chick embryo. Using real-time analyses of cell behaviour, we provide
Fraser, Scott +4 more
core +1 more source
The Embryonic Development of the Cotylean Polyclad Phrikoceros jannetae
Acta Zoologica, EarlyView.ABSTRACT Polyclads exhibit distinct developmental modes ranging from direct to indirect development, with several transitional stages also recognised. The existence of an indirect developmental mode in polyclads with a planktonic life history stage in the form of a free‐swimming larva is unique among all free‐living flatworms and makes polyclads a ...
Mehrez Gammoudi +6 more
wiley +1 more source
The epithelium of the dorsal marginal zone of Xenopus has organizer properties [PDF]
, 1992 We have investigated the properties of the epithelial layer of the dorsal marginal zone (DMZ) of the Xenopus laevis early gastrula and found that it has inductive properties similar to those of the entire Spemann organizer.
Keller, Ray, Shih, John
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