Results 101 to 110 of about 5,285 (203)

The Amphioxus SoxB Family: Implications for the Evolution of Vertebrate Placodes

open access: yesInternational Journal of Biological Sciences, 2007
Cranial placodes are regions of thickened ectoderm that give rise to sense organs and ganglia in the vertebrate head. Homologous structures are proposed to exist in urochordates, but have not been found in cephalochordates, suggesting the first chordates
Daniel Meulemans, Marianne Bronner-Fraser
doaj  

Immunohistochemical study of cytoskeletal and extracellular matrix components in the notochord and notochordal sheath of amphioxus

open access: yesInternational Journal of Biological Sciences, 2006
A major cytoskeletal and extracellular matrix proteins of the amphioxus notochordal cells and sheath were detected by immunohistochemical techniques. The three-layered amphioxus notochordal sheath strongly expressed fish collagen type I in its outer and ...
doaj  

On the development of Amphioxus lanceolatus

open access: yesAnnals and Magazine of Natural History
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +3 more sources

Free amino acids in the nervous system of the amphioxus Branchiostoma lanceolatum. A comparative study

open access: yesInternational Journal of Biological Sciences, 2006
The cephalochordate amphioxus is the closest invertebrate relative to vertebrates. In this study, using HPLC technique, free L-amino acids (L-AAs) and D-aspartic acid (D-Asp) have been detected in the nervous system of the amphioxus Branchiostoma ...
doaj  

Whole-genome duplication shaped cell-type evolution in the vertebrate brain. [PDF]

open access: yesNature
Zhu Y   +14 more
europepmc   +1 more source

Keimesgeschichte der Ascidie und des Amphioxus

open access: yes, 1874
Engraved by W. Grohmann mostly after an image by Kowalevsky.Embryology of the amphioxus and ascidian. The ascidian is depicted in figures 1-6: mature egg (figure 1), egg in cleavage (figure 2), blastoderm (figure 3), gastrula (figure 4), larva (figure 5),
Haeckel, Ernst, 1834-1919   +2 more
core  

Evolutionary genomics of the recently duplicated amphioxus Hairy genes

open access: yesInternational Journal of Biological Sciences, 2006
Amphioxus Hairy genes have gone through a number of lineage-specific duplications, resulting in eight members, some of which are differentially expressed in the embryo. In order to gain insights into the evolution and function of this gene family we have
doaj  

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