Results 41 to 50 of about 7,701 (178)
Biology, 2023 Mollusca represents one of the ancient bilaterian groups with high morphological diversity, while the formation mechanisms of the precursors of all germ cells, primordial germ cells (PGCs), have not yet been clarified in mollusks.
Feng Zhao +8 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
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Vertical signalling involves transmission of Hox information from gastrula mesoderm to neurectoderm. [PDF]
PLoS ONE, 2014 Development and patterning of neural tissue in the vertebrate embryo involves a set of molecules and processes whose relationships are not fully understood.
Nabila Bardine +5 more
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Reduced Retinoic Acid Signaling During Gastrulation Induces Developmental Microcephaly
Frontiers in Cell and Developmental Biology, 2022 Retinoic acid (RA) is a central signaling molecule regulating multiple developmental decisions during embryogenesis. Excess RA induces head malformations, primarily by expansion of posterior brain structures at the expense of anterior head regions, i.e.,
Michal Gur +4 more
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Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
LifeCommencing with sperm–egg fusion, the early stages of metazoan development include the cleavage and formation of blastula and gastrula. These early embryonic events play a crucial role in ontogeny and are accompanied by a dramatic remodeling of the gene ...
Xinyi Cheng +7 more
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3D anatomical atlas of the heads of male and female adult Chamaeleo calyptratus
The Anatomical Record, Volume 309, Issue 8, Page 1937-1969, August 2026.The veiled chameleon is a model organism in reptile development research. Utilizing contrast‐enhanced microCT and deep learning segmentation models, we have generated the first digital atlases of the skull, nervous system, cranial muscles and hyolingual muscles.
Alice Leavey +3 more
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Biology Open, 2021 The blastula Chordin- and Noggin-expressing (BCNE) center comprises animal-dorsal and marginal-dorsal cells of the amphibian blastula and contains the precursors of the brain and the gastrula organizer.
Aitana M. Castro Colabianchi +5 more
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Cell Proliferation, Volume 59, Issue 8, August 2026.The hfPSC‐LCs could be established from naïve hESCs, conventional hESCs, hiPSCs, and human blastocysts. The hfPSC‐LCs hold robust capacity for three germ layers, hPGCLCs, and hALPCs. ABSTRACT Human embryos undergo pivotal morphogenetic remodelling shortly after implantation. The understanding of this crucial stage is severely impeded by the scarcity of
Xiaoxiao Wang +11 more
wiley +1 more source
Ecology and Evolution, Volume 16, Issue 7, July 2026.This work investigates how two factors (food and temperature) affect the metabolic rates of the larval stages of ecologically important coral‐eating crown‐of‐thorns sea star (Acanthaster sp.). Warming increased metabolic rates, with oxygen consumption at raised temperatures compared to control. After accounting for larval size, feeding had no effect on
Ronan T. Hill +2 more
wiley +1 more source