Results 41 to 50 of about 51,992 (374)
eLife, 2017 Organizers play important roles during the embryonic development of many animals. The most famous example is the Spemann organizer that sets up embryonic axes in amphibian embryos.
Matthias Pechmann +4 more
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Leaf structure of species of the Brassicaceae Burnett family in Southwestern Kyzylkum, Uzbekistan [PDF]
Caspian Journal of Environmental SciencesLeaf species of the family Brassicaceae have been studied, diagnostic features have been identified. Omitted by various types of trichomes: stellate, dendroid stomata are randomly arranged, numerous, non-submerged, mostly anomatid hemiparacytic ...
Gulbahar Tursinbayeva +10 more
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Animals, 2020 Horse trainers often claim that exercise on a water treadmill (WT) leads to a greater muscle power and development compared to terrestrial locomotion, because of the greater viscosity of water compared to air.
Aritz Saitua +6 more
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Flexibility in the Patterning and Control of Axial Locomotor Networks in Lamprey [PDF]
, 2011 In lower vertebrates, locomotor burst generators for axial muscles generally produce unitary bursts that alternate between the two sides of the body. In lamprey, a lower vertebrate, locomotor activity in the axial ventral roots of the isolated spinal ...
Buchanan, James T.
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Visual Field Coordinate Systems in Visual Neurophysiology [PDF]
Anais da Academia Brasileira de Ciências, 2023 In this work, algorithms have been developed to: 1. Compare visual field coordinate data, presented in different representation systems; 2. Determine the distance in degrees between any two points in the visual field; 3.
MARCELO GATTASS, RICARDO GATTASS
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Evolution of Insect Dorsoventral Patterning Mechanisms [PDF]
Cold Spring Harbor Symposia on Quantitative Biology, 2009 The dorsoventral (DV) patterning of the early Drosophila embryo depends on Dorsal, a maternal sequence-specific transcription factor related to mammalian NF-kappaB. Dorsal controls DV patterning through the differential regulation of approximately 50 target genes in a concentration-dependent manner.
Michael Levine +3 more
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Scientific Reports, 2019 Dorso-ventral (DV) countershading is a highly-conserved pigmentary adaptation in vertebrates. In mammals, spatially regulated expression of agouti-signaling protein (ASIP) generates the difference in shading by driving a switch between the production of ...
L. Cal +7 more
semanticscholar +1 more source
Dorsoventral splitting of the infundibulum in a child with pituitary hypoplasia
Radiology Case Reports, 2023 Pituitary development arises from ectodermal tissue creating Rathke's pouch and ultimately the adenohypophysis anteriorly whereas neuroectodermal tissue arising from the diencephalon creates the neurohypophysis posteriorly. Alterations in pituitary development can lead to hormonal dysregulation and dysfunction. Following clinical suspicion of pituitary
John P. Welby +5 more
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Proceedings of the National Academy of Sciences of the United States of America, 2019 Significance The evolutionary origins of novel traits that define animal phyla have puzzled biologists for centuries. The possible antecedent of one such novelty that draws extensive discussion is that of the chordate central nervous system, which exists
Yi-Hsien Su +6 more
semanticscholar +1 more source
The mechanisms of dorsoventral patterning in the vertebrate neural tube
Developmental Biology, 2005 We describe the essential features of and the molecules involved in dorsoventral (DV) patterning in the neural tube. The neural tube is, from its very outset, patterned in this axis as there is a roof plate, floor plate, and differing numbers and types of neuroblasts.
Leigh Wilson, Malcolm Maden
openalex +5 more sources